update environment.yml & remove .coveragerc

[jGaboardi]

This MR:

• resolves update environment.yml #152
• resolves purge .coveragerc - no longer needed #153

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 69.5%. Comparing base (d92edcb) to head (95875c4).
Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##            main    #154     +/-   ##
=======================================
+ Coverage   67.6%   69.5%   +1.9%     
=======================================
  Files         41      42      +1     
  Lines       9622   10059    +437     
  Branches    1433       0   -1433     
=======================================
+ Hits        6504    6988    +484     
- Misses      2704    3071    +367     
+ Partials     414       0    -414     

see 40 files with indirect coverage changes