+ - check ability to use epsilon as a conjunct
+ - use 'a'-'z' or 'a-z' instead of [a-z]?
+ - EOF token?
+ - de-genericize?
+ - better toString() methods all around...
+ - foo.add(x)
+ foo.add(y.andnot(x)) ==> this is broken
+ - distinguish Conjunct from Sequence?
+ => !(Conjunct instanceof Reducible)
+ - document the assumption that Sequences that match epsilon
+ must have tag, and that ONLY that tag is returned
+ when the sequence matches epsilon
+ - try to avoid building the parts of the tree that end up getting
+ dropped
+ - double-check all the region logic
+
+ ..................................................
+
+ - paper/techreport opportunities
+ - interaction between RNGLR and follow restrictions
+ - "doomed node" optimization
+
+ - automatically collect time statistics and display
+ - serializable parse tables?
+ - better ambiguity reporting
+ - colorized tree-diffs?
+ - graphviz?