Comment out Android 4.3 test in Sauce until they resolve their issue.
Make `_.wrap` use `_.identity` when `wrapper` is nullish. [closes #767]
Add more `_.identity` for nullish args tests.
Add `_.propertyOf`.
Don't set data on functions created by a curried function.
Doc cleanup. [ci skip]

Conflicts:
	lodash.js
Add Safari 8 to Sauce tests.