Filesystem class also captures stderr when executing console command.
Turn on SDL filesystem support for Linux platform.
Update Docs/Reference.dox. [ci skip]
Refactor AttributeAnimation, make IntVector2 and IntRect interpolatable.
Add cardinal spline interpolation for AttributeAnimation.
Add new line at end of file.[ci skip]
Allow load and save interpolation method and spline tension to file.
Rename InterpolationMethod to InterpMethod, avoid conflict with Spline class, Add animated only attribute support, like Node's world position attribute.
Travis CI: API documentation update at 2014-04-12 03:33:38 UTC.
[ci package]
For Travis CI - switch CI build to use OS X build environment.