Bump version to 1.2.2

New release including !110 (merged).

Note: I've only updated the patch version since as far as I know it's a bugfix?

v1.3.0 please - this release will include nested group support as well. /cc @jacobvosmaer-gitlab

assigned to @rymai

closed

@nick.thomas I will let you handle v1.3.0! Thanks!

Closing in favour of !116 (merged)