Merge branch 'rc/1.9.6' into release

Merge branch 'rc/1.9.5' into release

Merge branch 'rc/1.9.4' into release

Merge branch 'rc/1.9.3' into release

Merge branch 'rc/1.9.2' into release

Merge branch 'rc/1.9.1' into release

Update release notes for 1.9.0

Filament 1.8.1

Prepare Filament v.1.8.0 (google#2787)

Bump version to 1.7.0 (google#2541)