added the word smile to the Brandeis Verb Lexicon (BVL)
regenerated VerbRoot.hs and Conjugations.hs
using the added BVL rules this should have added some missing entries
the error message at the end of the generated files now also mentions the file name to be checked for commented out entries
#26: commented in several generated entries required for unit tests
#26: moved several helper functions into where clause of main functions
added several function declarations to helper functions in where clauses
#26: fixed unparsable unit test "amy will_catch"
also made parseTense errors more informative
Fixes #26.