Uses Logger instead of System.err.print
Moves sample grammar and normalizer from src/test to src/main
Moves grammar file into a package
Adds evaluation of acccuracy ignoring annotation errors
Moves explanation of normalization into TimeNormalizer instead of TimeMLProcessor. Also uses scala.util.Try to simplify/clarify logic
Enable more compiler warnings in pom. Also fix a dependency that should only have been in test scope
Fixes a few pieces of code that were producing warnings
Adds comparison to TIMEN