There was a "uu" guess in all the heuristics_dictionary occurrences where I believe it should have been "u" -- can't have a multi-character guess. All are fixed here -- it causes an issue in the HW (we both fixed it as we went) so we should merge asap
Runestone has a hack where u on its own is misinterpreted by paver; I have switched these to 'uu', which it correctly translates to 'u' in the actual code. This has been pushed.
There was a "uu" guess in all the heuristics_dictionary occurrences where I believe it should have been "u" -- can't have a multi-character guess. All are fixed here -- it causes an issue in the HW (we both fixed it as we went) so we should merge asap