v4.0.0-alpha.0

• Migrated from mocha to jest
• Moved to lerna.
  • Split parse and format packages
• Added running examples and checking output as part of the tests
• Updated docs for new directory layout
• Added typescript examples
• Added generics type support to format and parse streams
• [ADDED] Docs around using strictColumnHandling to emit errors when there are more columns than headers [#195]