Preserve constraint identifiers

[matt-curtis]

First off — thank you for making this site; it's invaluable in getting a parsable breakdown of constraint resolution errors!

Something I noticed is that constraint identifiers are completely lost in the output, which (if you are using them) is quite the loss. Keeping them in would help a lot in determining what constraints are being set where, belong to what groups, etc. etc.

(Thanks again!)

[johnpatrickmorgan]

Thanks for raising this issue. I completely agree, they should be preserved. They are currently parsed but not used as part of the UI. I'll mark this as an enhancement, which might work well with #7.