Make scroll wheel work with SDL
Bring back old style SDL scroll events represented as mouse buttons; Support newer 'wheel' event to support Chrome; Support vertical as well as horizontal deltas.
remove test_sdl_audio_quickload which has been broken for a very long time
Code conventions and sign fix according to pull request feedback
Bump version
Remove the hardcoded alert message on WebGL context loss event in library_browser.js, since it prevents applications from benignly handling WebGL context loss events by reloading GL assets from disk.
Add new function emscripten_is_webgl_context_lost() that allows code to directly query to confirm the WebGL context loss status.
fix file argument changing before callback in async_wget; fixes #2349
warn on bad exports, fixes #2338
Merge branch 'sdl_mouse_wheel' of github.com:jechter/emscripten into incoming

Conflicts:
	emscripten-version.txt
commented closure in benchmarks
testcases for issue #2350
fix progress events for non mozilla browsers

Progress events didn't work for me in Chrome or IE. This change fixes it for me.
Add myself to AUTHORS
Merge pull request #2353 from mhenschel/master

emscripten_async_wget2 progress callback only working on mozilla browsers
Move the default WebGL context lost message to the default shell.html file so that default applications still show the error message, and applications can easily override the behavior if/when they see fit.
conditionalize when it can avoid costly side-effect free code
update heuristic
conditionalize in all boolean-emitting expressions
Merge pull request #2348 from juj/context_lost

WebGL context loss handling improvements.