Merge pull request #83 from doug-martin/master

v0.2.9
updated 'grouped' methods to handle cases where they are called without an existing clause on the DS, and regenerated docs.
Moved code in orGroupedAnd which was only necessary in one else block into that block. Also refactored common code from the other three methods into a single private method
Merge pull request #85 from jkc/master

updated 'grouped' methods to handle cases where they are called without ...
v0.2.11