Generalize costs

[bentaculum]

• Generalizes the signature of costs Split and Appear to the weight, attribute, constant format of other costs. This now optionally allows for variable costs for these events.
• Adds an optional constant the EdgeDistance cost. Here the signature is positional_attributes, weight, constant, since positional_attributes is a compulsory argument.
• Updates the API test to cover these changes.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (56469ee) 92.91% compared to head (1722dab) 93.37%.
Report is 6 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #54      +/-   ##
==========================================
+ Coverage   92.91%   93.37%   +0.46%     
==========================================
  Files          32       32              
  Lines         762      770       +8     
==========================================
+ Hits          708      719      +11     
+ Misses         54       51       -3     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[funkey]

Thanks a lot for that! This looks good to me, with the exception of constant for EdgeDistance. This can already by done through EdgeSelection and would be redundant.

[bentaculum]

Good point. I removed this redundancy and updated the test accordingly.

[bentaculum]

Hi @funkey, ok to merge this?

[funkey]

Sorry for the delay. Yes, looks good, thanks a lot! :)