Added support for adding duplicate suffix 'copy' to non unique fields.

[jackton1]

No description provided.

[pep8speaks]

Hello @jackton1! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

There are currently no PEP 8 issues detected in this Pull Request. Cheers! 🍻

Comment last updated at 2021-08-12 01:40:41 UTC

[codecov]

Codecov Report

Merging #445 (954850d) into main (bf0c1ea) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main      #445   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            6         6           
  Lines          287       296    +9     
=========================================
+ Hits           287       296    +9     

Impacted Files	Coverage Δ
model_clone/mixins/clone.py	100.00% <100.00%> (ø)
model_clone/utils.py	100.00% <100.00%> (ø)

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