- RFC2425 has a notion of profiles, perhaps that should be added?
- add some more error handling
- perhaps a 'strict' option that for example throws errors on
  non-compliant line-endings
- automated testing, perhaps using org.junit.*
- some sort of torture-test that checks that the parser handles 'evil'
  lines, for example empty keys and empty values.
- do a list over error codes
- exit() doesn't quit as quick as it could.