Version 0.5.1:
* Misc fixes to better support YouTube, Vimeo, Flowplayer
* VM correctness improvements
* Support for AS templates
* Dropped half-finished AVM1 support
* Support for EGL/GLES2 rendering
* Support for loading external JPEGs
* Better text handling(e.g. coloring)
* Improved test runner, support for the Tamarin testsuite
* Various API fixes for bugs uncovered by the testsuite
* Dropped mozilla dependency, use internal NPAPI headers
* Added LIGHTSPARK_PLUGIN_LOGLEVEL environment variable to control the log level of the browser