Add missing iso646.h
Add support for `Mix_ReserveChannels`
Added test that tests the basic functionality of SDL_Mixer including pausing and resuming both the Sound channels and Music channel.
Added test and fixed bugs exposed by the test.
1.3.0
bump number of minified names
use bufferSubData in FULL_ES2
Merge pull request #936 from michaeljbishop/add-mix-reservechannels

Add Mix_ReserveChannels
fix client side GL arrays in FULL_ES2
Merge pull request #944 from vvuk/client-fix

fix client side GL arrays in FULL_ES2
add testcase for issue 944
Merge pull request #934 from waywardmonkeys/add-iso646-header

Add missing iso646.h
make pgo output work in asm.js
add debug logging in emscripten.py of text sizes
add ASSERTIONS to asm2g, and fix assertions for asm
add comments on ~/.emscripten file
Use less generic names for variables.

These are generic enough that in libcxx, they get expanded into
functions which also have variables named the same thing (__x, __y)
and that then leads to a buggy libcxx.
support -s KEY=@PATH in emcc, for very large settings values
update test_chunking
unique ids for aborts for dead functions