Add KEYWORDS rule + fragments (#8)
Remove fragment; we're matching keywords directly (#8)
Replace all string literals w/token rules; ID now lowest precedence (#8)
Remove duplicate token definition DO_KEY
Corrected RETURN->RETURN_KEY (closes #8)
Factored EXPR (#6)
Factored EXPR_LIST (#6)
Factored ID_LIST (#6)
Factor INDEX_EXPR (#8)
Factored STAT_SEQ to fix STAT (hopefully) (closes #6)
OK, fixed STAT_SEQ for real this time (#6)
Fixed expression for EXPR
Fix comments with rule numbers
Factored STAT, removed STAT_SEQ (closes #6, closes #10 for reals)
Most lex rules are now parse rules, now combined grammar (#12)
Corrected many parse rules (#12)
Correct declaration_segment mispelling (#12)
Correct mispelling + duplicate tokens (#12)
Debug tokens, parse rules (#12)
All grammar rules working (closes #12)