Add icon for .aseprite-extension

Fix compilation on Windows/MSVC 32-bit

Update laf module

Fix crash when we apply a filter that removes a cel

Compile only Skia library with INSTALL.md instructions

Merge branch 'master'

Add Alt+click on timeline to hide all layers except the clicked one

https://community.aseprite.org/t/turn-off-all-other-layers/151

Add ability to select timeline + color bar at the same time (related to 

aseprite#1741)

Update harfbuzz module

Fix syntax error in ASSERT() statement