using NC version of PreImagesRepresentative

[cdwensley]

This PR addresses issue #104

[codecov]

Codecov Report

❌ Patch coverage is 53.84615% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 59.70%. Comparing base (caa1b98) to head (cd1751b).
⚠️ Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
lib/modulehom.gi	40.00%	6 Missing ⚠️
lib/algebra.gi	0.00%	2 Missing ⚠️
lib/functors.gi	33.33%	2 Missing ⚠️
lib/pathalg.gi	0.00%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #105   +/-   ##
=======================================
  Coverage   59.70%   59.70%           
=======================================
  Files          78       78           
  Lines       23901    23901           
=======================================
  Hits        14271    14271           
  Misses       9630     9630           

Files with missing lines	Coverage Δ
lib/module.gi	66.66% <100.00%> (ø)
lib/moduledecomp.gi	54.41% <100.00%> (ø)
lib/modulehomalg.gi	66.05% <100.00%> (ø)
lib/pathalgtensor.gi	88.52% <100.00%> (ø)
lib/algebra.gi	33.04% <0.00%> (ø)
lib/functors.gi	73.48% <33.33%> (ø)
lib/pathalg.gi	65.13% <0.00%> (ø)
lib/modulehom.gi	59.51% <40.00%> (ø)

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[cdwensley]

This seems to be the last package required to merge the commit before we can move to the next stage of the process.