* Begrudgingly adds 2.7 support
* Windows permissions fixes in the tests
* PEP8 cleanup
* Optimize a few classes by re-indexing using the cartesian product of all of the axis. This way we don't have to iterate over dimensions. The unique individual indexes will be the value of the axis.
* Implement `reduce_dims` on a few classes to remove the feature dimensions from DSG files when there is only a single feature.