Relax the RegEx restrictions to allow the new ICAAN TLDs.
fix-#733: index_cls is ignored when deciding to set _cls as index prefix
Merge pull request #738 from DavidBord/fix-733

fix-#733: index_cls is ignored when deciding to set _cls as index prefix
Update for add the change that closes issue #733
Update .travis.yml for allow failures in pypy3
Allow atomic update for the entire `DictField`
Merge remote-tracking branch 'upstream/master'
Adding changelog entry.
Merge pull request #742 from bocribbz/dictfield-atomic-update

Allow atomic update for the entire `DictField`
Update changelog.rst
Fix conflict for merge PR #726
Merge branch 'jshirley-master'
Makes 'db' argument to connection optional.