Add Redis as a dependency and timestamped brainfingers to redis as a sorted set
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Don't bother disconnecting redis (multithreading makes this nasty)
Add method to log 'events' to redis, for later reconciliation with brainfinger values
Store each event type as its own key, and attach the last 4 brainfingers samples as matches, and the rest of the brainfinger samples since the last event of the same type as non-matches
Update README to mention that redis is now required
Merge branch 'feature-redis' into feature-brain-training