Add chain() and tap().
Disable missing-docstring for memoized function.
Merge pull request #16 from nathancahill/functions

Add assign()
Import metadata in __init__.py.
Merge branch 'master' of github.com:dgilland/pydash
Compact code.
Update CHANGES with assign().
Add extend() as alias of assign().
Add unique_id().
Migrate to markdown docs to rest.
Convert remaining markdown docs to rest.
Do strict comparison of floating to True in random().
Assert random() returns int.
Add start of documentation.

Refs #18
Add sphinx and sphinx_rtd_theme to requirements.txt.
Add empty files for docs/_static and docs/_templates so that folders can be added to repo.
Add make docs to main makefile.
Add napoleon for enhanced docstring support in sphinx.
Add invert().
Fix formatting syntax.