write Hashable (Options Postscript R2) instance manually

Work around a bug in GHC 7.4.2, which chokes when deriving Generic
instances for associated data types.
(cherry picked from commit 304dee1cffc0b1c9918d66ffd66ee28a14983bec)
Bump version to 1.0.1.1
Release notes for 1.0.1.1
(cherry picked from commit 69d7d18e94addda5b7591f556b3bc10799e2d571)