fix font file selector
better handling of the fonts loaded from file: save/load in settings and update UI accordingly
added batch mode to Hiero :)
Fixed Bug: loopDuration could be wrong

The loopDuration could be higher than the sum of all durations when the
float had more than 3 decimal places.
Implement pan/pitch/volume/loop
Use int for animationInterval instead of long

With an integer a loopDuration of 24 days is possible which is more
than enough. Long is unnecessary big.
Remove posted runnables as they are run.

If `executeRunnables()` is called from a posted runnable, this commit prevents the runnable from being executed twice.
Add centering to ScrollPane.scrollTo; fix #2561

scrollToCenter(x, y, width, height) is now equivalent to scrollTo(x, y, width, height, false, true);
Update CHANGES, reflect ScrollPane#scrollTo change
Merge pull request #2564 from aegamesi/master

Add another ScrollPane#scrollTo; fix #2561
GdxDefinitionSuperdev inherits GdxDefinition for convenience
Merge pull request #2434 from tube42/master

Hiero command line support
Make sure SelectBox does not use the old scrollToCenter API
Merge pull request #2567 from saschagehlich/bugfix/scroll-to-center-deprecation

Make sure SelectBox does not use the old scrollToCenter API
Add getTextInput accepting both text and hint values
Remove old getTextInput and getPlaceholderTextInput
Improved limit()/clamp() behaviour - now it doesn't call nor(), reusing the
(needed anyway) len var, resulting in *one* scl() call instead of *two*.
Also, we use cached len, so that we don't have to calculate it twice.
Mostly beneficial for Vector3 class.
Also adds limit2(),setLength(), setLength2() and removes docs inherited
from Vector interface
added missing methods to GWT WeldJoint

and fixed getFrequency()
Merge pull request #2571 from dermetfan/patch-1

added missing methods to GWT WeldJoint
added missing setMaxLength(..) to GWT RopeJoint
Merge pull request #2572 from dermetfan/patch-1

added missing setMaxLength(..) to GWT RopeJoint