debugging nested signif brackets
cleanup comments
roughly working crossed bracket placement
minor tweak to group name position
ENH: Add value restoration function
Small fix to ConcentricCircles.set_colors()
WIP: fixing brackets
nesting working, needs better tests
bugs fixed, better tests
refactor of bracket drawing, more forgiving of lists/tuples, better tests
better docs
mo better docs
ENH: Allow sigmoid parameter fixing
Merge pull request #133 from drammock/fixNestedBrackets

FIX: debugging nested signif brackets
FIX: MEG fixes
Fix docs, only allow list or tuple
Fixed docs line, added tests
Tested tests
Merge pull request #138 from rkmaddox/fixconcirc

FIX: Allow more than just list as input to ConcentricCircles.set_colors()
FIX: Fix Py3k warnings