Add clamp_value function to math_util
Fix some focus issues, allow to set a DefaultFocusView on ViewGroups.
More focus behaviour tweaking.
Focus the contents of popup screens
Move a return statement to the correct position.
For extra safety, check the GLSL version when detecting ES 3.0.
JSON: Rename single-parameter getString to getStringOrDie to emphasize the danger.
Add basic thick-line drawing code
Minor tweak to drag behaviour of scrollviews
Add flag to enable getFilesInDir to get hidden files (dotfiles).
Merge pull request #1 from hrydgard/master

re-cloned