BUG: allow lex string comparisons
closes #6155

gr8!
 thanks!
 np trying to do more ... got  the single element bool coming ur way in 5...4...3...
 do you know how the new github inteface shows if travis has passed?
 i was getting a yellow box for a while while it was running
 but u merged before i had a change to see the green here (was green by email)
 oh...mine not updating...I actually looked on travis

FYI...I think travis runs each one under your id AND pydata.....this doesn't turn green until the pydata one does
 hm ok good 2 know thx
