changed `AbelianPcpGroup`, `DihedralPcpGroup`

[ThomasBreuer]

Now they call the methods for AbelianGroupCons and DihedralGroupCons, respectively, which belong to the package. This way, the AbelianGroup fix from #79 works also for AbelianPcpGroup, and now DihedralPcpGroup(2) works.

[codecov[bot]]

Codecov Report

Merging #81 (b401b38) into master (ca986fc) will increase coverage by 0.02%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #81      +/-   ##
==========================================
+ Coverage   56.27%   56.29%   +0.02%     
==========================================
  Files          87       87              
  Lines       13030    13015      -15     
==========================================
- Hits         7332     7327       -5     
+ Misses       5698     5688      -10     

Impacted Files	Coverage Δ
gap/exam/generic.gi	82.60% <100.00%> (-0.40%)	:arrow_down:

... and 1 file with indirect coverage changes

[fingolfin]

Does this also resolve issue #80, i.e. AbelianPcpGroup(1,[1]); works now? If so perhaps this could be added as another test case?

[ThomasBreuer]

Does this also resolve issue #80, i.e. AbelianPcpGroup(1,[1]); works now? If so perhaps this could be added as another test case?

Yes, of course. Thanks for the hint.