Thank you all very very much!!

God bless,
Sr. Maria Ruth OSB

2015-08-01 19:06 GMT+02:00 Víctor <[email protected]>:

> Thanks to all the Gregorio Team for this awesome update! I'll be testing
> shortly. I find particularily charming the addition of pneumatic glyphs,
> this is fantastic!
> Congratulations to you all!
>
> Víctor.
>
> El 01/08/15 a las 09:44, Br. Samuel Springuel escribió:
>
> 4.0.0 carries with it some significant changes, implementing many new
>> features (some of which have been long asked for), and systematizing the
>> user interface to make it more consistent. Please make sure you look
>> carefully at [the changelog](CHANGELOG.md) and [upgrade guide](UPGRADE.md).
>>
>> # CHANGELOG
>> ## [4.0.0-beta] - 2015-08-01
>> ### Fixed
>> - Handling of the first syllable in gabc is now more consistent with the
>> all other syllables.  This centers the syllable correctly when using latin
>> syllable centering (see [#42](
>> https://github.com/gregorio-project/gregorio/issues/42)) and makes the
>> use of styles less surprising in the first syllable (see [#135](
>> https://github.com/gregorio-project/gregorio/issues/135)).
>> - Handling of manually-placed custos is improved.  In particular, a
>> manual custos at the end of the score should no longer be lost when the bar
>> happens to be at the end of the line.
>> - Improved rendering of torculus resupinus flexus figures (see [#18](
>> https://github.com/gregorio-project/gregorio/issues/18)).
>> - Horizontal episema on the second note of a scandicus is now rendered in
>> the correct place (see [#419](
>> https://github.com/gregorio-project/gregorio/issues/419)).
>> - The dot in a space directly above a punctum in a descending neume is
>> now placed slightly higher in the space (see [#386](
>> https://github.com/gregorio-project/gregorio/issues/386) and [Gna! bug
>> 21737](https://gna.org/bugs/?21737)).
>> - Choral signs are now positioned correctly around porrectus and torculus
>> resupinus (see [#387](
>> https://github.com/gregorio-project/gregorio/issues/387) and [Gna! bug
>> 22025](https://gna.org/bugs/?22025)).
>> - Gregorio will now try harder to select an appropriate pitch for an
>> automatic custos (`z0`) on a clef change (see [#446](
>> https://github.com/gregorio-project/gregorio/issues/446)). If results
>> are not satisfactory, use a manual custos (`+`) to select a pitch manually.
>> - The centering of styled text under notes is now correct (See [#509](
>> https://github.com/gregorio-project/gregorio/issues/509)).
>> - Space for above lines text is now correctly added as needed, even at
>> the beginning of a score (see [#533](
>> https://github.com/gregorio-project/gregorio/issues/533)).
>>
>> ### Changed
>> - A new, more systematic naming scheme has been created for GregorioTeX
>> macros.  The naming scheme should reduce the chances of naming conflicts
>> with other packages and make it easier to identify what a particular macro
>> is for and how to use it.  Most user functions have been renamed in order
>> to bring them into line with this scheme.  Please see GregorioRef for a
>> complete list of the new function names.  In general, old names will still
>> work, but they will raise a deprecation warning and will be dropped from
>> GregorioTeX in a future relase.
>> - The spacing algorithm has completely changed, expect your scores to
>> look quite different (better we hope).
>> - Lines are now aligned on the leftmost note instead of the leftmost
>> letter.
>> - Some glyph shapes are improved a little in greciliae, it should be
>> noticeable especially for porrectus.
>> - The `O` modifier in gabc now has expanded uses beyond the salicus
>> `(egOi)`.  A stemmed oriscus will appear on a lone pitch `(gO)` or a
>> followed by a lower pitch `(gOe)` (see [#76](
>> https://github.com/gregorio-project/gregorio/issues/76)).  A virga
>> strata will appear on the second note of two ascending pitches `(giO)`.
>> - With thanks to *Abbazia Mater Ecclesiae (IT)* for drawing the new
>> shapes, the strophicus, liquescent strophicus, liquescent oriscus, and
>> liquescent punctum inclinatum in greciliae have changed to better
>> differentiate them from other shapes. If you prefer the old shapes use:
>> ```
>>     \grechangeglyph{Stropha}{greciliae}{.caeciliae}
>>     \grechangeglyph{StrophaAucta}{greciliae}{.caeciliae}
>>     \grechangeglyph{OriscusDeminutus}{greciliae}{.caeciliae}
>> \grechangeglyph{PunctumInclinatumAuctus}{greciliae}{.caeciliae}
>> ```
>> - Default initial sizes have been chosen so that they are more
>> appropriate when an infinitely scaling font is loaded.  LaTeX will make an
>> automatic substitution of the closest avaialble size when such a font is
>> not used.
>> - Porrectus deminutus and torculus resupinus deminutus glyphs have been
>> updated to more closely match the current Solesmes books (see [#143](
>> https://github.com/gregorio-project/gregorio/issues/143)). If you prefer
>> the old forms, use:
>> ```
>>     \grechangeglyph{Porrectus*}{*}{.alt}
>>     \grechangeglyph{TorculusResupinus*}{*}{.alt}
>> ```
>> - New (much) improved drawings for letter bars (for Versicle, Antiphon,
>> etc.). You must fine-tune them if you use a text font other than Linux
>> Libertine, see [UPGRADE.md](UPGRADE.md) for details.
>> - The default extension `gregorio` (the executable program) will use when
>> it produces GregorioTeX files has been changed from `.tex` to `.gtex`.  Any
>> calls to `\includescore` that use the old extension should be changed
>> appropriately.
>> - Horizontal episema improvements:
>>   - A horizontal episema on the first two notes of a porrectus is now
>> rendered differently than a horizontal episema on all three notes of a
>> porrectus.  It will no longer reach to the right side of the porrectus (see
>> [#70](https://github.com/gregorio-project/gregorio/issues/70)).
>>   - Similar to appending `0` to the `_` to force a horizontal episema to
>> appear below a note, `1` may now be appended to the `_` to force a
>> horizontal episema to appear above the note.  These may be used
>> simutaneously, by adding both `_0` and `_1` to the same note (see [#40](
>> https://github.com/gregorio-project/gregorio/issues/40)).
>>   - It is now possible to render a small horizontal episema.  To use it,
>> append `3` (for left-aligned), `4` (for center-aligned), or `5` (for
>> right-aligned) to the `_` used for adding the horizontal episema in gabc
>> (see [#40](https://github.com/gregorio-project/gregorio/issues/40)).
>>   - Horizontal episema "bridging" has been made more consistent and is
>> now possible on an episema that is below the note. (see [#389](
>> https://github.com/gregorio-project/gregorio/issues/70)).
>>   - It is now possible to suppress the automatic horizontal episema
>> "bridging" across spaces within a syllable.  To use it, append `2` to the
>> `_` on the note before the space you do not want bridged (see [#72](
>> https://github.com/gregorio-project/gregorio/issues/72)).
>>   - A horizontal episema will no longer overlap with a vertical episema
>> on the same note (see [#395](
>> https://github.com/gregorio-project/gregorio/issues/395)).
>> - The dot after a torculus whose last note is on a line will now appear
>> below the line (see [#386](
>> https://github.com/gregorio-project/gregorio/issues/386)). If you do not
>> like the automatic placement of a dot after any note on a line (not just
>> the torculus), you may specify a `0` or `1` after the `.` to force the dot
>> to appear below or above the line, respectively.
>> - Choral sign dimensions have been renamed (see [#387](
>> https://github.com/gregorio-project/gregorio/issues/387)):
>>   - `beforechoralsignspace` is now `beforelowchoralsignspace`.
>>   - `lowchoralsignshift` is now `choralsigndownshift`.
>>   - `highchoralsignshift` is now `choralsignupshift` and its sign is now
>> inverted.
>> - Style for score elements can now be changed via the `\grechangestyle`
>> command.  This replaces the mixed system of styling commands which could be
>> redefined for some elements and specialized commands for applying styles to
>> others.  See GregorioRef for details.
>> - Annotations with more than two lines are now supported (originally
>> requested [on the user list](
>> http://www.mail-archive.com/gregorio-users%40gna.org/msg00164.html) when
>> two line annoations were made possible).  To build the annotation box use
>> `\greannoataion`.  See GregorioRef for details.
>> - The `annotation` header field in `gabc` now places its value(s) above
>> the inital if no annotation is explicitly given by the user via
>> `\greannotation` (see [#44](
>> https://github.com/gregorio-project/gregorio/issues/44)).
>> - `\grescaledim` now takes two arguments to bring it into line with the
>> systemized naming scheme.  The second argument should be `yes`, `true`, or
>> `on` if you want the distance to scale when the staff size changes.
>> Anything else will make the distance independent of the staff size.
>> - Gregorio is now able to make individual lines of a score taller, when
>> the position of the note require extra space, without affecting the rest of
>> the lines.  This is the new default behavior.  See [UPGRADE.md](UPGRADE.md)
>> and GregorioRef for details (for the change request, see [#59](
>> https://github.com/gregorio-project/gregorio/issues/59)).
>> - Braces are now rendered using MetaPost by default.  This allows the
>> line weight to remain more consistent when braces are stretched.  The old
>> behavior (which uses the score font instead) can be restored using
>> `\gresetbracerendering{font}`.  See [UPGRADE.md](UPGRADE.md) and
>> GregorioRef for details (for the change request, see [#535](
>> https://github.com/gregorio-project/gregorio/issues/535)).
>>
>> ### Added
>> - With thanks to Jakub Jelínek, St. Gallen style adiastematic notation is
>> now handled through [nabc syntax](
>> http://gregoriochant.org/dokuwiki/doku.php/language) (see
>> GregorioNabcRef.pdf for details and [the new
>> example](examples/FactusEst.gabc)). Only one line above the notes is
>> currently handled. This is a preview, backward incompatible change are
>> possible in future releases.
>> - `<eu>` tag in gabc to delimit *Euouae* block in the score. It prevents
>> linebreaking and makes spaces tighter. See [UPGRADE.md](UPGRADE.md) for
>> details.
>> - With thanks to Fr. Jacques Peron, it is now possible to embed short
>> gabc snippets directly into a TeX document.  The command is
>> `\gabcsnippet`.  See GregorioRef.pdf for full details.
>> - `[ub:x:y mm]` tag, similar to `[ob:x:y mm]`, but for braces under notes.
>> - `[ob:x{]` and `[ob:x}]` tag pairs for braces where the length is
>> determined by the distance of the opening and closing tags. `[ocb:x{]` with
>> `[ocb:x}]`, `[ocba:x{]` with `[ocba:x}]` and `[ub:x{]` with `[ub:x}]` can
>> be used similarly for other kinds of braces and brackets.
>> - The ability to substitute an arbitrary glyph for one used by
>> GregorioTeX.  This adds four macros:
>>   - `\grechangeglyph` to make a score glyph substitution
>>   - `\greresetglyph` to remove a score glyph substitution
>>   - `\gredefsymbol` for (re-)defining an arbitrary non-score glyph that
>> scales with the text
>>   - `\gredefsizedsymbol` for (re-)defining an arbitary non-score glyph
>> that requires a point-size to be specified.
>> See GregorioRef.pdf for full details.
>> - Added `--with-kpathsea` option to configure script, to check input and
>> output file against `openout_any` and `openin_any` settings of texmf.cnf
>> (TeXLive only). Necessary to be included in `shell_escape_commands` in
>> TeXLive.
>> - Support for `lualatex -recorder`.  Autocompiled gabc and gtex files
>> will now be properly recorded so that programs like `latexmk -recorder` can
>> detect the need to rebuild the PDF when a gabc file changes.
>> - A vertical episema may now be forced to appear above or below a note.
>> In gabc, use `'0` for the vertical episema to appear below and `'1` for the
>> vertical episema to appear above (see [#385](
>> https://github.com/gregorio-project/gregorio/issues/385)).
>> - The first syllable and first letter of the first syllable that is *not*
>> interpreted as the initial of the score are now passed to macros that allow
>> them to be styled from TeX.  The first syllable is passed to
>> `\GreFirstSyllable#1` and the first letter of the first syllable is passed
>> to `\GreFirstSyllableInitial#1`.
>> - The final line of a score may now be forced to be fully justified
>> (rather than ragged) using `\gresetlastline{justified}` before including
>> the score (see [#43](
>> https://github.com/gregorio-project/gregorio/issues/43)). Use
>> `\gresetlastline{ragged}` to switch back to a ragged last line.
>> - `\gresethyphen{force}` forces GregorioTeX to put a hyphen between each
>> syllable in a polysyllabic word. `\gresethyphen{auto}` restores behavior to
>> normal.
>> - Support for custom vowel centering rules.  Put a file called
>> `gregorio-vowels.dat` into your project directory or into a directory
>> accessible from TEXMF and add the header `language: name;` to your gabc
>> file.  The `gregorio-vowels.dat` file describes how vowels are to be
>> located in the *name* language. See GregorioRef for details.
>> - `\gresetlinecolor` takes a named color as an argument.  As a result,
>> the red staff lines can be made consistent with the text, even when the
>> user changes `gregoriocolor` with `\gresetlinecolor{gregoriocolor}`.
>> Addresses [#21787 on the old tracker](
>> https://gna.org/bugs/index.php?21787).
>> - Package option `deprecated=false`. Causes all deprecated commands to
>> raise an error and halt TeX.
>> - The ability to add LilyPond-like point-and-click textedit links into
>> the PDF file to aid with debugging scores.  This must be explicitly enabled
>> and **should be turned off** when producing files for distribution as it
>> embeds path information into the output.  To enable this, you must pass the
>> `-p` option to gregorio when compiling gabc files and add
>> `\gresetpointandclick{on}` before including the score.  It may be toggled
>> back off with `\gresetpointandclick{off}`.  See GregorioRef for details
>> (for the change request, see [#528](
>> https://github.com/gregorio-project/gregorio/issues/528)).
>> - New score fonts with glyphs unique to Dominican chant.  These fonts
>> replace the epiphonus and the augmented liquescents with corresponding
>> figures from Dominican liturgical books.  To use the new fonts, pass the
>> `[op]` option to the `\gresetgregoriofont` command (i.e.,
>> `\gresetgregoriofont[op]{greciliae}`).  See GregorioRef for details (for
>> the change request, see [#1](
>> https://github.com/gregorio-project/gregorio/issues/1)).
>> - Support for "punctum cavum inclinatum" and "punctum cavum inclinatum
>> auctus" figures.  The gabc for these are `(Gr)` and `(Gr<)`, where `G` is
>> the capitalized pitch letter.
>>
>> ### Deprecated
>> - `\GreSetStaffLinesFormat`, supplanted by
>> `\grechangeformat{normalstafflines}...`
>> - `\greinitialformat`, if you were redefining this command, use
>> `\grechangeformat{initial}...` instead
>> - `\grebiginitialformat`, if you were redefining this command, use
>> `\grechangeformat{biginitial}...` instead
>> - `\gretranslationformat`, if you were redefining this command, use
>> `\grechangeformat{translation}...` instead
>> - `\greabovelinestextstyle`, if you were redefining this command, use
>> `\grechangeformat{abovelinestext}...` instead
>> - `\grelowchoralsignstyle`, if you were redefining this command, use
>> `\grechangeformat{lowchoralsign}...` instead
>> - `\grehighchoralsignstyle`, if you were redefining this command, use
>> `\grechangeformat{highchoralsign}...` instead
>> - `centering-scheme` gabc header, supplanted by `\grelyriccentering` in
>> TeX.  See GregorioRef for syntax.
>> - `\setaboveinitialseparation`, supplanted by
>> `\grechangedim{annotationseparation}...`
>> - `gregoriotex-font` gabc header, supplanted by `\gresetgregoriofont` in
>> TeX.  See GregorioRef for syntax.
>> - `\scorereference`, supplanted by `\grescorereference`
>> - `\GreScoreReference`, supplanted by `\grescorereference`
>> - `\commentary`, supplanted by `\grecommentary`
>> - `\setgretranslationcenteringscheme`, supplanted by
>> `\gresettranslationcentering`
>> - `\englishcentering`, supplanted by `\gresetlyriccentering{syllable}`
>> - `\defaultcentering`, supplanted by `\gresetlyriccentering{vowel}`
>> - `\setgrefactor`, supplanted by `\grechangestaffsize`
>> - `\forcecompilegabc`, supplanted by `\gresetcompilegabc{force}`
>> - `\autocompilegabc`, supplanted by `\gresetcompilegabc{auto}`
>> - `\nevercompilegabc`, supplanted by `\gresetcompilegabc{never}`
>> - `\includescore`, supplanted by `\gregorioscore`
>> - `\grenoscaledim`, supplanted by `\grescaledim{...}{no}`
>> - `\gresetdim`, supplanted by `\grecreatedim`
>> - `\setstafflinethickness`, supplanted by `\grechangestafflinethickness`
>> - `\grecoloredlines`, supplanted by `\gresetlinecolor`
>> - `\greredlines` and `\redlines`, supplanted by
>> `\gresetlinecolor{gregoriocolor}`
>> - `\grenormallines` and `\normallines`, supplanted by
>> `\gresetlinecolor{black}`
>> - `\greremovelines`, supplanted by `\gresetlines{invisible}`
>> - `\gredonotremovelines`, supplanted by `\gresetlines{visible}`
>> - `\GreHidePCLines`, supplanted by
>> `\gresetlinesbehindpunctumcavum{invisible}`
>> - `\GreDontHidePCLines`, supplanted by
>> `\gresetlinesbehindpunctumcavum{visible}`
>> - `\GreHideAltLines`, supplanted by
>> `\gresetlinesbehindalteration{invisible}`
>> - `\GreDontHideAltLines`, supplanted by
>> `\gresetlinesbehindalteration{visible}`
>> - `\gresetnlbintranslation`, supplanted by `\gresetbreakintranslation`
>> - `\greblockcustos`, supplanted by `\greseteolcustos{manual}`
>> - `\greenableeolshifts`, supplanted by `\greseteolshifts{enable}`
>> - `\gredisableeolshifts`, supplanted by `\greseteolshifts{disable}`
>> - `\GreUseNoramalHyphen`, supplanted by `\greseteolhyphen{normal}`
>> - `\GreUseZeroHyphen`, supplanted by `\greseteolhyphen{zero}`
>> - `\greremoveclef`, supplanted by `\gresetclef{invisible}`
>> - `\grenormalclef`, supplanted by `\gresetclef{visible}`
>> - `\AddHEpisemusBridges`, supplanted by `\gresethepisemus{bridge}`
>> - `\RemoveHEpisemusBridges`, supplanted by `\gresethepisemus{break}`
>> - `\UseAlternatePunctumCavum`, supplanted by
>> `\gresetpunctumcavum{alternate}`
>> - `\UseNormalPunctumCavum`, supplanted by `\gresetpunctumcavum{normal}`
>> - `\clivisalignmentalways`, supplanted by `\gresetclivisalignment{always}`
>> - `\clivisalignmentnever`, supplanted by `\gresetclivisalignment{never}`
>> - `\clivisalignmentspecial`, supplanted by
>> `\gresetclivisalignment{special}`
>> - `\greusedefaultstyle`, supplanted by `\gresetglyphsytle{default}`
>> - `\greusemedicaeastyle`, supplanted by `\gresetglyphsytle{medicaea}`
>> - `\greusehufnagelstyle`, supplanted by `\gresetglyphsytle{hufnagel}`
>> - `\greusemensuralstyle`, supplanted by `\gresetglyphsytle{mensural}`
>>
>>
>> ### Removed
>> - GregorioXML and OpusTeX output
>> - Support for `lilypond-preamble`, `musixtex-preamble`, and
>> `opustex-preamble` gabc headers.
>> - Support for the font Gregoria.
>> - Chironomy markings (gabc `u` and `U`), which were not working correctly
>> in the first place.
>> - `\Vbarsmall`, `\greletterbar`, and `\greletteraltbar`, supplanted by
>> the new glyph system, see [UPGRADE.md](UPGRADE.md).
>> - `\GreSetAboveInitialSeparation`, supplanted by
>> `\grechangedim{annotationseparation}...`
>> - `\includetexscore`, supplanted by `\gregorioscore[n]`
>> - `\greincludetexscore`, supplanted by `\gregorioscore[n]`
>> - `\includegabcscore`, supplanted by `\gregorioscore[f]`
>> - `\greincludegabcscore`, supplanted by `\gregorioscore[f]`
>> - `\GreSetSpaceBeforeInitial`, supplanted by
>> `\grechangedim{spacebeforeinitial}...`
>> - `\GreSetSpaceAfterInitial`, supplanted by
>> `\grechangedim{spaceafterinitial}...`
>> - `\GreSetAboveInitialSeparation`, supplanted by
>> `\grechangedim{annotationseparation}...`
>> - `\gresetstafflinefactor`, supplanted by `\grechangestafflinethickness`
>>
>> # UPGRADE
>> ### Command Name Systemization
>>
>> A naming scheme for GregorioTeX commands has been established and so most
>> commands have had their names changed in order to bring them into line with
>> the new scheme.  Some have also had their syntax changed. Briefly, user
>> commands all now have a `\gre` prefix (to prevent name colisions with other
>> packages) and groups of commands which altered a single setting have been
>> replaced by a single command which takes an argument specifying the value
>> of the setting.  The notable exception to this are the two main commands:
>> `\gregorioscore` (replaces `\includescore`) and `\gabcsnippet`. See
>> GregorioRef for the complete list of new command names and their syntax.
>>
>> Old command names should still work for now, but will raise a deprecation
>> warning which indicates the name of the correct command to use. Exceptions
>> are noted below:
>>
>> - `\grescaledim`: This function now takes two arguments.  The second
>> should be `yes`, `true`, or `on` to acheive the old behavior.
>>
>> Additionally a new package option has been added. The option
>> `deprecated=false` is helpful if you wish to ensure that your TeX file is
>> compliant with the new naming system. This option causes all deprecated
>> commands to raise an error, halting TeX, thus allowing you to actively find
>> all deprecated commands and update them in your TeX file.
>>
>> ### Barred letters
>>
>> If you use barred letters and a font other than libertine in your
>> document, you must adjust the horizontal placement of the bar on the
>> letter.  To do so, use the `\gresimpledefbarglyph` macro.  For example, use
>> `\gresimpledefbarredsymbol{A}{0.3em}` in your preamble, tweaking the second
>> argument to have a good result (same for R and V).  If using LaTeX, you can
>> alternately use the `\grelatexsimpledefbarredsymbol` macro, which allows
>> control over bold and italic versions of the barred letter.  See the
>> documentation of `\gresimpledefbarredsymbol` and
>> `\grelatexsimpledefbarredsymbol` in the PDF documentation for more details.
>>
>> If you were using `\Vbarsmall`, `\greletterbar`, and `\greletteraltbar`,
>> you must use `\gresimpledefbarredsymbol` to redefine your barred letters
>> (see PDF documentation for details).
>>
>> ### .gtex extension
>>
>> The `gregorio` executable now uses the `.gtex` extension by default
>> (instead of `.tex`, formerly) for GregorioTeX files that it produces. If
>> you use `\includescore{file.tex}`, then you should change this to
>> `\includescore{file.gtex}` or use the newer autocompilation feature.
>>
>> ### Custom spacings
>>
>> If you are using custom spacings, please update the values of
>> `interwordspacetext`, `intersyllablespacenotes` and `interwordspacenotes`
>> to match their new definitions (in the comments in `gsp-default.tex`).
>>
>> ### Euouae blocks
>>
>> You are advised to surround you *Euouae* blocks by the new `<eu>` tag.
>> For instance,
>>
>>     E(i) u(i) o(i) u(h) a(h) e(fe..)
>>
>> can become
>>
>>     <eu>E(i) u(i) o(i) u(h) a(h) e</eu>(fe..)
>>
>> This will prevent line breaking, so if you were using so called *no
>> linebreak areas* (with `{` in gabc) just for Euouae blocks, you can switch
>> to this new tag, it will make things clearer and allow further spacing
>> customization.
>>
>> ### Horizontal episema improvements
>>
>> Changes to the way the horizontal episema is placed and "bridged" to
>> other notes within the syllable may cause Gregorio to render things
>> differently in the more esoteric (or bug-ridden) cases.  If you are
>> depending on the old behavior, you might need to add suffixes to the `_` in
>> gabc to get what you want:
>>
>> - Add `0` to force the episema to appear below the note.
>> - Add `1` to force the episema to appear above the note.
>> - Add `2` to prevent Gregorio from attempting to connect this episema to
>> the next.
>> - Add `3` to use a small episema, aligned to the left of the note.
>> - Add `4` to use a small episema, centered in the middle of the note.
>> - Add `5` to use a small episema, aligned to the right of the note.
>>
>> Note: `3`, `4`, and `5` encompass a new feature and are listed here only
>> for completeness.
>>
>> ### Choral sign dimension renames
>>
>> - `beforechoralsignspace` has been renamed to `beforelowchoralsignspace`.
>> - `lowchoralsignshift` has been renamed to `choralsigndownshift`.
>> - `highchoralsignshift` has been renamed to `choralsignupshift` and its
>> sign inverted.
>>
>> ### Styling score elements
>>
>> Changing the styling of text elements of the score (the initial,
>> translations, etc.) formerly required the user to redefine a command which
>> took an argument while changing the styling of the staff lines had a
>> command specialized to that purpose.  All formats can now be changed via
>> the `\grechangestyle` command. This command takes two or three arguments.
>> The first argument, required, is the format to be altered. The defined
>> formats are:
>>
>> - `greinitial`: normal initials
>> - `grebiginitial`: big (2-line) initials
>> - `translation`: translation text
>> - `abovelinestext`: above lines text (`alt` in gabc)
>> - `normalstafflines`: the full length staff lines
>> - `additionalstafflines`: the short lines behind notes above or below the
>> staff.  This style defaults to inheriting changes to `normalstafflines`.
>> - `lowchoralsign`: low choral signs
>> - `highchoralsign`: high choral signs
>> - `modeline`: the mode annotation above the initial if the content of the
>> mode header in gabc is rendered.
>>
>> The second argument, also required, is the code necessary to turn on the
>> styling.  The third argument, optional and enclosed in square braces (`[`
>> and `]`), is the code necessary to turn off the styling (e.g. if the code
>> to turn on the styling contains a `\begin{environment}` then the code to
>> turn it off must have the matching `\end{environment}`.  The third argument
>> is optional because not all styling commands have explicit off switches.
>>
>> While the old way of changing the styles is still supported, you should
>> switch to this new method to future proof your scores.
>>
>> Examples: Let's say you previously had the following in your LaTeX
>> document:
>>
>>     \renewcommand{\greabovelinetextstyle}[1]{{\small\it #1}}
>>
>> This would have made the text which was wrapped with `<alt></alt>` in
>> your gabc file appear small and italicized in your score.  To update this
>> to the new system you would replace the above line with the following:
>>
>>     \grechangestyle{abovelinetext}{\small\it}
>>
>> ### Centering scheme
>>
>> The gabc `centering-scheme` header is now deprecated and will disappear
>> soon.  Use the `\grelyriccentering` command from TeX instead.  If you were
>> using `centering-scheme: latine;` in gabc, now use
>> `\grelyriccentering{vowel}` in the TeX file that includes the gabc.  If you
>> were using `centering-scheme: english;` in gabc, now use
>> `\grelyriccentering{syllable}` in the TeX file that includes the gabc.
>>
>> Using the gabc header will, in this release, do that for you, but it will
>> produce a deprecation warning.  This header will no longer be available in
>> the next release.
>>
>> ### Annotations
>>
>> Support for annotations with an arbitrary number of lines has been
>> added.  To facilite this, the old functions which added annotations to
>> specific lines (either the first or the second) are consolidated into a
>> single function `\greannotation` which builds the annotations line by
>> line.  If you used the old functions for adding annotations, then you
>> should switch out those functions for the new one.
>>
>> The distance associated with the annotations has also been renamed (from
>> `aboveinitialseparation` to `annotationseparation`) and added a new one
>> (`annotationraise`).  The first still controls the spacing between the
>> lines of the annoation.  The second controls the position of the annotation
>> relative to the score, and thus replaces the second argument in the old
>> functions.  By default, annotations are positioned so that the baseline of
>> the first line is aligned with the top line of the staff.  Positive values
>> of `annotationraise` will push the annotation up while negative values will
>> push it down.  If you were previously using the second argument to
>> `\gresetfirstlineaboveinitial` to adjust the spacing, you will need to
>> convert this to call:
>>
>>     \grechangedim{annotationraise}{0.1cm}{1}
>>
>> You will need to play with the vaule of the distance a bit to acheive the
>> desired positioning.
>>
>> As is normal, calls to the deprecated command names will raise a warning
>> but still work.  However there is one caveat: the old functions will always
>> add the annotations to the bottom of the annotation list, regardless of the
>> order in which they are called.  Previously, you could call
>> `\gresetsecondannotation` before `\gresetfirstannotation` and still have
>> the first annotation appear on top.   Which annotation appears on top is
>> now determined by the order in which the functions are called.
>>
>> #### The Annotation Header
>>
>> The `annotation` header in gabc files now passes its value(s) to
>> gregoriotex for placement above the inital letter of the score. Up to two
>> `annotation` field are supported, the first for the first line above the
>> initial, and the second field for the second line.
>>
>>     annotation: 1 Ant.;
>>     annotation: VII a;
>>
>> Full TeX markup is also accepted:
>>
>>     annotation: {\color{red}1 Ant.};
>>     annotation: {\color{red}VII a};
>>
>> If the user already defined annotation(s) in the main TeX file via
>> `\greannotation` then the `annotation` header field will not overwrite that
>> definition.
>>
>> #### Variable Height Line Spacing
>>
>> Gregorio is now able to make individual lines of a score taller, when the
>> position of the note require extra space, without affecting the rest of the
>> lines.  This is the new default behavior.  If you prefer the uniform line
>> heights of earlier versions, use:
>>
>>     \gresetlineheightexpansion{uniform}
>>
>> Within a TeX document, you can switch back to variable line heights by
>> using:
>>
>>     \gresetlineheightexpansion{variable}
>>
>> You can freely switch between the two behaviors within a TeX document.
>>
>> This new behavior requires two passes (two runs of lualatex) in order to
>> do the calculation correctly.  On the first pass, lualatex will warn you
>> with the message
>>
>>     Module gregoriotex warning: Line heights or variable brace lengths
>> may have changed. Rerun to fix.
>>
>> As you edit your document, lualatex will only show this warning if an
>> extra run is required.
>>
>> Alternately, you can use something like latexmk to automate this
>> activity.  Instructions for using latexmk are outside the scope of this
>> document.  Please consult the latexmk documentation for more information on
>> using it.
>>
>> It should also be noted that this new feature, besides requiring two
>> passes, also imposes a small performance penalty on each pass to do the
>> additional computation.  This is negligible for small documents, but may
>> have more noticeable impact as documents get larger.
>>
>> #### MetaPost brace rendering
>>
>> Gregorio now uses MetaPost (by default) to render braces.  This allows
>> fine-tuning to better maintain optical line weight when braces are
>> stretched.  Since the shapes are slightly different, you may prefer the old
>> behavior, which may be restored by using:
>>
>>     \gresetbracerendering{font}
>>
>> Within a TeX document, you can switch back to MetaPost brace rendering by
>> using:
>>
>>     \gresetbracerendering{metapost}
>>
>> You can freely switch between the two behaviors within a TeX document.
>>
>
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