working on lex-flatmap
working on auto-generating intransitive forms of transitive verbs
working on verb auto-variation
add new (exists? <map> <path>) function: true iff <path> exists in <map>.
more work on intransitivizing transitives
move exists? and cleanup some unused functions
transitive-to-intransitive works as expected: now formerly transitive verbs show up in game
Merge branch 'lex-flatmap'