Update Q to v0.9.6
Only support Mr ~0.13.0
Update changelog for v0.13.1
Add alternate Mr version predicate until Montage upgrades to Mr 0.13

Because otherwise this version of Mop 0.13 won't be able to mop the
currently released version of Montage (0.13.0).

Once Montage upgrades to Mr 0.13.0 the alternate version predicate
can be removed.
0.13.1
Merge pull request #34 from Stuk/0.13.1

v0.13.1