no more hack workarounds in print_state required
turned off log.debug calls and epilog sanity checks
comments added, digram parameters consistently named
Merge branch 'nodebug'
activated log.debug calls
activated danity checks
activated sanity checks
added overlap re-learning test
fixed overlap re-learning bug
known breakage tests added
partial rewrite of learning logic
learning logic rewrite
refactored prev/next to l/r
another rewrite in progress
class separation by callbacks, rewritten learning logic
all learning moved to symbol space
learning in rule activated
improved debugging output with indentation
testing sequences moves into loops
almost working