added warning note, to help others not to waste 2 hours on a pygame bug on OSX
add .jpe to the supported extensions for providers that supports jpeg

As it seems to be an accepted extension for jpeg, guess_extension can
return it, and make AsyncImage save the image to .jpe, which was
breaking it.
allow Observeable list asignemnt to VariableListProperty. Fixes #2079.
allow Observeable list asignemnt to VariableListProperty. Fixes #2079.
Don't include comments when binding kv properties.
Merge pull request #2094 from matham/kv-comment

Fixes to not include comments when binding kv properties.
Merge pull request #2085 from kivy/support_jpe

add .jpe to the supported extensions for providers that supports jpeg
Merge pull request #2082 from francisl/master

added warning note, to help others not to waste 2 hours on a pygame bug ...
Merge pull request #2090 from matham/var-list

Allow VariableListProperty to accept any list derivative
Added download info for build script
Merge branch 'master' of https://github.com/kivy/kivy
Added instructions for forcing clean builds
doc: revisions to packaging-ios-compile.rst
Doc: core:text usage example.
doc: corrected gcc reference
Merge branch 'master' of https://github.com/kivy/kivy
doc: grammar corrections to core/audio/__init__.py
doc: fixed header issue
doc: revisions to guide/packaging-ios-compile.rst
fix problem with list(bool)

"filter" was used as a varname, which caused 2->3 compatibility issues when filter was replaced with list(filter.