submodules: Update trappy to latest master
Created by: bjackman
This brings
- Better error messages when attempting to parse absent or unknown events with trappy.stats.grammar
- A bug fix for parsing events with '=' in column fields
I just spent 15 minutes debugging trappy.stats.grammar before realising I had already tracked down and "fixed the issue" (improved the error message) in trappy's master.. time to update :D