Add support for --a=b arguments
Merge pull request #17 from markhibberd/topic/assignment-argument

Add support for --a=b arguments
Fix type/argument shadowing warnings
Merge pull request #18 from markhibberd/topic/fix-arg-shadowing

Fix type/argument shadowing warnings
Upgrade SBT to 0.13.5
Upgrade to 2.11.2 by default
Upgrade to Scalaz 7.1.0
Rename pirate.test to pirate.spec

This is partly to work around the clash with scalaz.test