wrap the pandas import
remove unused import
Merge pull request #471 from rmcgibbo/pandas

wrap the pandas import
Add the failing test case and a fix
Merge pull request #475 from rmcgibbo/angle

Add the failing test case and a fix
Merge branch 'master' of https://github.com/rmcgibbo/mdtraj
Merged Robert's fix for angles into angle_mic