Add trivial IsForeign Foreign instance
Merge pull request #21 from MichaelXavier/isforeign-foreign

Add trivial IsForeign Foreign instance
Add Eq instance for ForeignError

The use case is uncommon here, but this comes up a lot in testing. If
you're testing an IsForeign instance, you'd want to assert equality on F
which is Either ForeignError a.
Merge pull request #22 from MichaelXavier/eq-foreignerror

Add Eq instance for ForeignError
Update generated docs and grunt task for pscDocs
Update travis build to always use latest release
add ES3 fallbacks for Array.isArray and Object.keys
Merge pull request #18 from davidchambers/es3

add ES3 fallbacks for Array.isArray and Object.keys