Merge tag '0.95a7' into development

Cache contexts and queues.
Merge tag '0.95a8' into development

Hotfix for travis->pypi deployment.
Merge tag '0.95a9' into development

Bugfix in travis->pypi deploy flow.
Skip doc build for non master branches
added aug assign support for BitXor and Mod.
Added aug assign handing for BitAnd, BitOr, LShit and RShift
Merge pull request #26 from ucb-sejits/aug-assign-feature

Aug Assign now supports all compound assignments
Fix reported issue 30 by importing ctree.dotgen specifically in the convenience methods for tree display in ipython
Merge branch 'development' into fix_issue_30
Better error message for non-mandatory packages sphinx and graphviz
default file will now be used if file_name is None when using ctree.browser_show_ast
change version to 0.96b
delete stray arraydoubler from ctree
Merge branch 'release/0.96b'

Conflicts:
	ctree/transformations.py
	ctree/visual/dot_manager.py
Merge branch 'release/0.96b'

Conflicts:
	ctree/transformations.py
	ctree/visual/dot_manager.py
Merge branch 'master' of https://github.com/ucb-sejits/ctree