v0.2.0

Breaking Changes

• Enums variant constants now prefixed with their type name to avoid clashes.

New Features

• Internally tagged enums are now supported
• &str fields are now supported
• go-away now deduplicates types so if a given type appears in more than one
  place it should only result in one go type being output.
• The go output is now tested, so should work better

Bug Fixes

• Go union type output is now more likely to compile (it didn't at all prior to
  this)
• Single field structs are no longer considered newtypes
• Go marshalling now works (it had bugs previously)

Changes

• Messed with the order of output a bit