alternate fix for #7
adds exception handling for removing non-existent observers
fixes memory leak
Use KVO in a context-aware fashion.
Merge pull request #23 from sixten/develop

Use KVO in a context-aware fashion.
change the key for unscaled images
Merge commit 'eaa99c618b428491ca7d76650782506963f55000' into develop
clear newly-created vImage buffers before processing
Merge pull request #26 from origamilabs/issue-25

[FIX #25]
Updated README for 0.0.3
Updated for 0.0.4 release.
updates podspec for 0.0.4 release
Removes commented-out code.
Merge pull request #27 from origamilabs/0.0.4-release

0.0.4 release