add notes on dev under NixOS
update to 5.2.2 for release
Optimize Input.Classify.classify.

So I had a problem that classify.compile is evaluated on every single
keystroke. I can only guess that when classify had a call to compile
under a guard, it prevented GHC to optimize this as expected. Switching
'compile table' and pattern matching on input seems to help, I no longer
see it dominating in profiling data.
Merge branch 'large-input-performance' of github.com:ethercrow/vty into ethercrow-large-input-performance
Merge branch 'ethercrow-large-input-performance'
rename fallbackClassifier to standardClassifier.
up to 5.2.3 for release