Django sessions TTL support
Fix docs quotes
Update LICENSE
Added regression test for numerical string keys.
Fixed #238: dictfields handle numerical strings indexes.
fix travis build: builds were failing because libz.so location changed.
Fix for issue #237: clearing changed fields recursively in EmbeddedDocuments after saving a Document
Add testcase for issue #237
Adding google analytics
Merge branch 'master' of github.com:MongoEngine/mongoengine
Removing custom layout
fix error reporting, where choices is list of flat values
Merge pull request #245 from zmolodchenko/patch-1

fix error reporting, where choices is list of flat values
Changed dereference.py to keep tuples as tuples
added unit test for dereference patch
Added LongField to support 64-bit integer type.
Added test cases for LongField.
Fixed potential overflow error.
ReferenceField query chaining bug fixed.
Revert "Fixed potential overflow error."

This reverts commit 67182713d96233d3d2feb0f67d39ddaf1789c692.