Versioning edit
Change order of parse rules for empty role params
Update syntax to Scribble 0.3

Add oneof support
Add verbose error messages and line numbers
Projection for existential operator
Quickfix: Parser missed out rule for inf
 Minor bug fix

  * Quickfix: Printing of oneof misses out role name
  * Fix local protocol for oneof with correct syntax
  * Minor sytnax fix
Release 1.3.4

 * Fix parser and projection support for inline group