Added Matrix types to Variant. Added ToString() to Matrix types. Added Matrix getters/setters to XMLElement. Added ToMatrix string conversion functions. Added possibility to assign shader parameters from Matrix variants. Fixed missing setting of Color variant shader parameter on Direct3D9.
Travis CI: API documentation update at 2014-03-31 22:44:26 UTC.
[ci package]
For Travis CI - switch CI build to use OS X build environment.