Discuss latest changes to master before releasing

There are a lot of changes happening right now that have not been discussed, including breaking changes.

6d3100e...master

At the very least these should be pull requests that other contributors can discuss.

Changes include:

• Removing _.transform
• Removing _.create
• Renaming _.keysIn to _.allKeys
• Renaming _.mapValues to _.mapObject
• Renaming _.assign to _.extendOwn
• Renaming _.matches to _.isMatch
• Adding _.matcher alias _.matches
• Reverted some changes in 1.7 (ie. _.extend)