Adding ability to animate UILabel.textColor.
Merge pull request #53 from waltflanagan/master

Adding ability to animate UILabel.textColor.
Merge pull request #54 from RuiAAPeres/master

Added shadow properties
2 pop playgrounds
Refactored dependencies
Merge pull request #57 from shu223/master

Refactored dependencies
namespace all exported math C functions; fix #56
support suppressing  automatic display link activation
added cornerRadius
added UIScrollView zoomScale
Merge pull request #69 from owenv/master

added UIScrollView zoomScale
update travis file
Some minor changes, removed unnecessary code

Some minor changes, removed unnecessary code
Merge pull request #70 from cyndibaby905/master

Removed unnecessary code
ensure animation fromValue applied to current frame; fix #61

- add run loop observer; render animations on frame added
- remove time offset hack that skipped first animation frame
- avoid setting a 0 scale in favor of a practically zero but non-zero scale
change POPLayerExtras visibility to public; fix #79
add AGGeometryKit+POP reference
Fix typo in README resource link
Merge pull request #85 from lutaaya/patch-1

Fix typo in README resource link
Fix simulator slow motion animations.

Using CACurrentMediaTime() directly broke slow-motion animation support. Use the same logic as -render to ensure consistent timing.