Merge tag '2.0.2' into develop

Release v2.0.2
Properly fix non-normalized Marbls
Record permutation used to reorder marbls in marblset
No need for normalize flag on MarblSet
Correct egg info on development install link
Fix bug in comparing TPMs of different dimensions

TPMs are now represented with `_LexList`s, a subclass of `list` that
allows for comparison with non-Iterables (these are always considered
smaller than the `_LexList`). This allows for lexicographical sorting
when the TPMs have different shapes.
Bump version
Merge branch 'release/2.0.3'