Log Message:
Update to 3.1.9

CHANGES:
3.1.9

- Many and various updates to documentation and package description (inlcuding
  the homepage links).
- Add an 'Eq' instance for 'ParseError'
- Fixed a regression from 3.1.6: 'runP' is again exported from module
  Text.Parsec.

3.1.8

- Fix a regression from 3.1.6 related to exports from the main module.