Merge remote-tracking branch 'private/master' into EOL

.travis.yml

README.md

bin/Resources/libgme64.dll

libs/SDL2/COPYING.txt

libs/SDL2/Makefile

libs/SDL2/SRB2NOTE.txt

libs/SDL2/WhatsNew.txt

libs/SDL2/docs/README-android.md

libs/SDL2/docs/README-dynapi.md

libs/SDL2/docs/README-raspberrypi.md

libs/SDL2/docs/README-winrt.md

libs/SDL2/i686-w64-mingw32/bin/SDL2.dll

libs/SDL2/i686-w64-mingw32/bin/sdl2-config

libs/SDL2/i686-w64-mingw32/include/SDL2/SDL.h

libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_assert.h

libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_atomic.h

libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_audio.h

libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_bits.h

libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_blendmode.h

libs/SDL2/i686-w64-mingw32/include/SDL2/SDL_clipboard.h