jart/timespan — pull request #1 by livni (2012-12-21 14:19:22+00:00)
Title: Added ability to match on any of the given timestamps

Comes in handy in various use cases where it's easy to describe the timestamps with positive statements.
For example: Reception hours could be ['9:00-12:00|mon-fri','13:00-17:00|tue-thu']
I guess you could describe it with a single positive statement and then multiple (in this case 4) negative statements, but this way it's more convenient.