chore: release 10.0.0

[release-please]

🤖 I have created a release *beep* *boop*

10.0.0 (2021-02-03)

⚠ BREAKING CHANGES

• remove deprecated JavaAuthYoshi releaser (fix!: remove deprecated JavaAuthYoshi releaser #736)
• helpers in factory class renamed.
• more options pulled to top level (some types changed in process)
• GitHub release now uses "run" rather than "createRelease" to execute
• drop unused proxy-key parameter.
• cli: refactor factory/CLI to be more testable (feat(cli)!: refactor factory/CLI to be more testable #725)
• removed per page parameter from GitHub#findMergedReleasePR and moved some internal helpers

Features

• cli: refactor factory/CLI to be more testable (#725) (713bfc5)
• packageName parameter is now optional (713bfc5)
• support stable release branch names (#720) (36cae96)

Bug Fixes

• remove deprecated JavaAuthYoshi releaser (#736) (fc86755)

Code Refactoring

• drop unused proxy-key parameter. (713bfc5)
• GitHub release now uses "run" rather than "createRelease" to execute (713bfc5)
• helpers in factory class renamed. (713bfc5)
• more options pulled to top level (some types changed in process) (713bfc5)

---

This PR was generated with Release Please. See documentation.

[codecov]

Codecov Report

Merging #735 (e895191) into master (fc86755) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #735   +/-   ##
=======================================
  Coverage   88.52%   88.52%           
=======================================
  Files          57       57           
  Lines        7129     7129           
  Branches      659      621   -38     
=======================================
  Hits         6311     6311           
  Misses        817      817           
  Partials        1        1           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update fc86755...e895191. Read the comment docs.

[yoshi-automation]

Release is at https://github.com/googleapis/release-please/releases/tag/v10.0.0

[release-tool-publish-reporter]

The release build has started, the log can be viewed here. 🌻

[release-tool-publish-reporter]

🥚 You hatched a release! The release build finished successfully! 💜