Drop support for EOL Python 2.7 and 3.5

[hugovk]

Fixes #102.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (b0e4c88) 100.00% compared to head (76e95af) 100.00%.

Additional details and impacted files

@@            Coverage Diff            @@
##            master      #117   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            5         5           
  Lines          105        96    -9     
  Branches        25        23    -2     
=========================================
- Hits           105        96    -9     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[penguinolog]

@jquast can we move forward with it?

[jquast]

Yes, we can move forward with this this week after the next release that includes #120 if there is such sincere interest from so many developers.

Do not mind about bringing the branch up to date, I will do that. Thank you for your effort @hugovk.

[hugovk]

Hi, checking in one year later and resolved the conflict :)

Looks like the Windows failures are caused by a GitHub bug: actions/setup-python#1034 Hopefully they'll fix it soon.

[webknjaz]

@hugovk feel free to use my new action approach for this: aio-libs/frozenlist#622 + aio-libs/frozenlist#633. I'm planning to keep it alive because I've been wanting a better cache control anyway.

https://github.com/marketplace/actions/cache-python-deps

[hugovk]

Thanks, we're not in a rush with this PR, because we're still pending #120 and a release before looking at this one, so I think we can wait a bit longer.

[webknjaz]

@hugovk fair! I just saw your back reference and realized I forgot to post about it over on the GH tracker. Did that just now.