[oll-user] [Challenges] New challenge

[Urs L. <ul...@op...>]

I've put up a new challenge:
https://github.com/openlilylib/engraving-challenges/blob/2-schumann-challenge/challenge02-schumann/README.md

I did *not* want to make it even simpler because I think this is a score 
that should be feasible by any program without posing esoteric problems.

I hope everyone is fine with that.

And of course everybody can also start/continue with the other one too.

Best
Urs