Parse the hxml more intelligently.

Based on Haxe's documentation plus a little trial and error, only the first space on each line is a delimiter.
Handle null audio data
Handle null audio data from bytes
Add support for 'openfl' style command
Use proper font name when embedding in Flash
Improve handling of font family name, move AssetHelper.processLibraries and fix a couple colors
Update to 2.0.0-alpha.5
Fix initial support for cubic bezier font outlines, need to come back and add support for multiple quadratic curves for better quality
Better approximation of cubic curves
Better OpenFL ASCII color on Mac
Merge pull request #249 from player-03/master

Parse the hxml more intelligently.
Don't require Java in order to build, skip SVG rasterizer when Java runtime not detected on Mac
Fix for loading type BINARY assets as TEXT on native, improve 'isText' file detection
Update to 2.0.0-alpha.6
Use version from exact haxelibs included, rather than the newest installed, when setting -D lib=version
Add patched haxe.CallStack to fix C++ stack order on errors
Use true font names and automatically register font names on native platforms
Fix template
Fix -args
Document -args