New submission from Hans Strijker :
Method ```configparser.RawConfigParser.set()``` has optional parameter *value*
with default value ```None``` resulting in the behavior that actually trying to
set a config parameter to ```None``` will not be propagated to
```Interpolation.before_set
New submission from Hans Strijker :
In the documentation I noticed "from Package import specific_submodule". I
recon package should be all lowercase in accordance with pep8.
(https://www.python.org/dev/peps/pep-0008/#package-and-module-names)
It may be far from the most importan