I have uploaded mintty 3.4.4 with the following changes:
Unicode and Emoji data
* Update to Emoji data version 13.1.
Terminal features
* Terminal reset clears progress bar (mintty/wsltty#202).
* DECTST colour fillings (CSI 4;10..13 y, VT240).
* Smart detection of progress indication also inmidst line
(mintty/wsltty#202).
* Fixed rendering of 0x7F (DEL code) in some 96-characters NRCS modes.
* Support for 48-bit hex colour specs (#1072).
Font rendering
* Enabled width detection for auto-narrowing non-BMP characters (#1065).
* Tweaked character ranges to consider for auto-narrowing (#1065).
* Enabled secondary font specification for Unicode blocks (#777).
Keyboard handling
* Compose key may also be user-defined super or hyper (#777).
Window handling
* Optionally transform Exit to characters, to exit on
application-level (#1063).
* Options dialog: configurable font and size (~#1059).
* Tweak initial setup of terminal pixel size (#1071).
Configuration
* New option ExitCommands (#1063).
* New options OptionsFont and OptionsFontHeight (~#1059).
* Extended syntax for option FontChoice (#777).
* New ComposeKey values super, hyper (#777).
The homepage is at http://mintty.github.io/
It also links to the issue tracker.
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Thomas