v0.3.0

Breaking changes:

• seq, alt: no longer use var-args (#18)
• addError now lives in combinators.js (#26)
• addError has a different type signature (#41)
• sepBy0, sepBy1 now live in combinators.js (#10)
• sepBy0, sepBy1 have different output types (#42)
  • sepBy0: Maybe (a, [(b, a)]) instead of {'values': [a], 'separators': [b]}
  • sepBy1: (a, [(b, a)])
• catchError: argument order swapped from function, parser to parser, function (#24)

New combinators:

• update (#34)
• repeat (#27)