set encoding in pom to UTF-8 to get rid of Maven warnings
remove unused imports
make parenthesized parts of regexes non-capturing
add very-long-line test for DeterministicTokenizer
Fix StackOverflowError on long lines in DeterministicTokenizer (factorie/factorie issue #168)
Merge pull request #194 from strubell/master

Fix issue #168 and some other cleanup