Squashed 'packages/mr/' changes from aff8c10..3d56498


git-subtree-dir: packages/mr
git-subtree-split: 3d56498c057300d23a4c7784dbd23defba07104f
Update Mr to v0.14.2
Update Mr dependency version to v0.14.2
Add redirects block for "montage"

As package reflexive module names have been removed from Mr
Merge pull request #1360 from @stuk

Upgrade Mr to 0.14.2