1.3.0

Released on: December 21, 2017

• Code generator does not emit action code when the action is empty.
• New command-line parameter "-l" or "--language" to specify a target language
  via command-line. This is useful when a grammar only contains AST definitions,
  which allows to render and run it in any target.
• Abstract syntax tree generation support:
  • Drafting an abstract syntax tree definition syntax for the grammar language,
    by using the operators "=" and ":=". See examples/expr.ast.par for an
    example working under both C and Python without any modifications.
  • C and Python parser targets extended to construct abstract syntax tree
    data structures dynamically.
  • These are first changes for an upcoming UniCC v2, where the targets shall
    be re-used with only few improvements.
• Fixed several bugs in the Python target on insensitive mode.
• Additionally allow ":" in case of "->" in grammar definitions.
• Internal code revisions started, but interrupted for now.
• Renamed folder "templates/" into "targets/".