Bug fixes, content inset and kCAMediaTimingFunctionDefault

• crash that could happen if animation was running on dealloc'ed button
• merge pull request from ehlersd, content inset support in the button.
• Changed all timing functions to kCAMediaTimingFunctionDefault instead of the linear or easeInOut I was using. In iOS7, the button transition and highlight/unhighlight animations are now using the more natural spring animation used throughout the OS.

Switched names of up/down caret.

1.1.2

bumping up version

Demo project cleanup

The demo was using copy of the control files, and as a result, latest release 1.1.0 changes only made it to the files in the demo project. Cleaned that up.

More button types & iOS 6.1 support

6 new button types: up, down, left and right caret ; left and right arrow

fix for nszombie crash

Crashed caused by double release of a CGPath in unhighlight code.

1.0.0

updated version 1.0.0 with matching tag.