Removed a mutable default param in Serializer.serialize().

I haven't seen this pop up explicitly as a bug in code; only noticed it
through code inspection.
Raise ApiFieldError on invalid datetimes
Update the SimpleCache implementation and docs to be up-to-date with Django 1.3+.
adds some notes on how to deal with throttling for a resourse
adds missing `:`
adds double `` for markdown
#273: Changes from llonchj; Added tests to cover dots in pks in urls.
Merge pull request #1013 from toastdriven/alphanumeric-pk-urls

Changes from llonchj; Added tests to cover dots in pks in urls.
Merge pull request #1008 from alecklandgraf/feature/adds-to-throttling-doc

Feature/adds to throttling doc
Fixed #486 - Added documentation for disabling all methods on list and detail endpoints

Signed-off-by: Pankaj Singh <psjinx@gmail.com>
Merge pull request #1025 from psjinx/issue#486

Fixed #486
fix missing python-mimeparse dependency in setup.py
Merge pull request #1029 from yedpodtrzitko/master

fix missing python-mimeparse dependency in setup.py
Update content_types.rst

It isn't fully clear from reading this documentation that you must register your ModelResources to your Api instance in URLconf.  This update should make it more clear and help those that are receiving a '' for generic related objects from any API calls.
Merge pull request #1030 from cherepski/patch-1

Update content_types.rst
pin python3-digest to allow its beta package to install without passing the --pre flag to pip >= 1.4
Update tools.rst
Make CacheThrottle work with DummyCache
Merge pull request #1041 from thinkingpotato/patch-1

Update tools.rst
assertHttpAccepted produces better error message