prep 1.2.9 release (#3590)

update versions to 1.2.8 (#3468)

Prep for 1.2.7 release.

1.2.6 release.

1.2.5 release.

Increment version for 1.2.4 release.

1.2.3 release.

Cut 1.2.2 release.

1.2.1 release.

v1.2.0 release.