Fix problems with predict handling offset and exposure
Merge pull request #1679 from kshedden/glm_predict_offset

BUG: Fix problems with predict handling offset and exposure in GLM
initial commit
Rename stripe to striped
Rename dotplot.py to dotplots.py
Wrapped matplotlib import in try
Major changes to interface -- not ready for review
Add tests
Finish interface rewrite, add vertical option, many other fixes
Fix import in test script
Place tests in function
Disable test
Improced handling of non-ndarray inputs
Removed pdf output from dotplot tests
Added styles_order argument to allow order of stacked data to be specified; reintroduced option for tests to output to pdf (but switched off).
Changed stacking order top top->bottom on horizontal plots
Added release text for dotplot
Added examples to docstring
Added examples to docstring, edited release notes
Rename dotplot to dot_plot; edit matplotlib import