Release 1.12.0rc1-0.31b0 (open-telemetry#1094) 

Release 1.11.1-0.30b1 (open-telemetry#1067) 

Release 1.11.0-0.30b0 (open-telemetry#1056) 

updating changelogs and version to 1.10.0-0.29b0 (open-telemetry#995) (… …open-telemetry#996)

updating changelogs and version to 1.9.1-0.28b1 (open-telemetry#887) * updating changelogs and version to 1.9.1-0.28b1 * Update CHANGELOG.md Co-authored-by: Nathaniel Ruiz Nowell <enruizno@uwaterloo.ca> * Update CHANGELOG.md Co-authored-by: Nathaniel Ruiz Nowell <enruizno@uwaterloo.ca> Co-authored-by: Nathaniel Ruiz Nowell <enruizno@uwaterloo.ca>

updating changelogs and version to 1.9.1-0.28b1 (open-telemetry#887) * updating changelogs and version to 1.9.1-0.28b1 * Update CHANGELOG.md Co-authored-by: Nathaniel Ruiz Nowell <enruizno@uwaterloo.ca> * Update CHANGELOG.md Co-authored-by: Nathaniel Ruiz Nowell <enruizno@uwaterloo.ca> Co-authored-by: Nathaniel Ruiz Nowell <enruizno@uwaterloo.ca>

updating changelogs and version to 1.9.0-0.28b0 (open-telemetry#875) 

updating changelogs and version to 1.8.0-0.27b0 (open-telemetry#835) 

updating changelogs and version to 1.7.1-0.26b1 (open-telemetry#809) 

Prepare release v1.6.2 and 0.25b2 (open-telemetry#762)