travis: add c++11 to gcc config
travis: try to fix osx gcc build
disable c++11 travis builds + disable c++11 warnings
Add a changelog file
Add a changeling tab to the about window
travis/osx: use libc++
travis/osx: execute tests on the clang configuration
Macros: format
Make sure thread storage has local data before clearing it
Merge branch 'workshop' of github.com:MrKepzie/Natron into workshop
Flag for stable release 1.0.0
Overlays: all interacts now receive mouse release events
Merge branch 'workshop' into python