gemoji 2.1.0

API changes:

• Emoji.find_by_alias/find_by_uncode no longer yield to block or raise an exception when emoji was not found. They just return nil.
• Emoji::NotFound exception is now gone.

Other changes:

• Unicode representations for a bunch of emoji have been tweak to better reflect what OS X actually renders as emoji.
• A bunch of images have been renamed. Run rake emoji in your project after updating this gem to fetch the new image files. You could delete the old ones first, but it might be better to keep them around so they don't 404 during the transition phase.