Drop python2.7 support

[jackton1]

No description provided.

[codecov]

Codecov Report

Merging #328 (6f162c3) into main (df4c830) will not change coverage.
The diff coverage is n/a.

❗ Current head 6f162c3 differs from pull request most recent head 217b4fa. Consider uploading reports for the commit 217b4fa to get more accurate results

@@           Coverage Diff           @@
##             main     #328   +/-   ##
=======================================
  Coverage   96.32%   96.32%           
=======================================
  Files           6        6           
  Lines         272      272           
=======================================
  Hits          262      262           
  Misses         10       10           

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