* Add Python 3.10.0rc1 binary wheels
* Drop Python 3.5 artifacts
* Document the drop of 3.5
* Fix the wrong pip pointer
* Update manylinux2014 to a newer version, remove 3.5 distribtest
* Update manylinux aarch64 to see if the absl error go away
* Use the preferred alias
* Allow different wheel library to produce different tag order
* Remove unused shell var and log produced wheels
* Use copy instead of move
* Make bash happy about the wildcard
* Upgrade the debian image to use 3.5+ Python
* Polish the comments for the Dockerfiles
* Remove Python 2.7 binary wheels
* Make sure pip won't pick-up newer versions
* Attempt to fix the distribtest
* Fallback to virtualenv==16.7.9 for 34 and 35
* Remove 34 from binary wheel distribtests
- add rubocop as a dev dependency
- fixed many style violations it reported, often using --auto-correct
- add a rubocop config
- .rubocop.yml shows the exceptions
- .rubocopy_todo.yml tracks outstanding style issues
- adds a rake task to allow rubocop styling checks to be automated