The biggest change is using `ImageFileCollection` from [ccdproc](http://ccdproc.rtfd.io) and eliminating that code from `msumastro`.
0.8.0
0.7.2
Adds limited python 3 support. None of the header processing code will work because it currently depends on astropysics, which will not be ported to python 3.
0.5.1
Includes building of table with all keywords, with a speedup from refactoring how the table is constructed.