test_annotate_frame failed on a second run, thanks to __file__ ending in .pyc instead of .py.  Replace it with a safer test.
Merge branch 'fix-test-annotate-frame' into maintenance/v0.1
Prepare for v0.1.2 release.
Merge pull request #40 from mdickinson/releases/v0.1.2

Prepare for v0.1.2 release.
Post-release version bump.
Merge from maintenance branch.