Kill handle leak in SquareButton.
With fire.
Remove unused import.
Clean up Color and GC leaks in Bubble.
Removing TODO.
Dispose all fonts in TextPainter.
Use 0.5.1 Gradle Nexus Plugin.
This update fixes the POM signing issue in 0.5.
Merge pull request #38 from l1m5/master

Fix Handle Leaks in Current Widgets