I decided to just try jumping into the pool and took a stab at creating a
new assbat for functions/default-parameters (Issue #40). Not sure if I am
doing this correctly, but I forked the SG20 repo, created a branch, pushed
changes, and created a PR for original SG20 for it. I couldn't assign any
reviewers. Is that something that is happening automatically? Should I try
this in some other way? Tried following the examples set forth in
copy-semantics and udls. Looking for feedback.

Cheers,
-Robert Douglas