allow closure creation on extern static inline methods (closes #2813)
Merge pull request #2848 from HaxeFoundation/extern-static-inline-closures

allow closure creation on extern static inline methods (closes #2813)
add version compatibility to README.md
RunTravis: add new flixel-demos target
Merge pull request #2899 from Gama11/test-flixel-demos

RunTravis: add new flixel-demos target
Merge branch 'development' of github.com:HaxeFoundation/haxe into higher_kinded_types