#53 refactor v3 parser

[soft-decay]

The parser has been split into two sub-parsers:

• ScriptParser parses:
  • the top level script blocks; and
  • the javascript expressions found in the template
• TemplateParser parses the template (previously named markup)
  • it delegates to ScriptParser when it finds a javascript expression. This way, the identifiers and dispatchers of the top level scripts are shared with the template javascript expression.

Both sub-parsers emit events that are caught by the main Parser:

• Some events are re-emitted as is (mainly the events from TemplateParser)
• Other events are intercepted, augmented, and then emitted.

[alexprey]

Have a nice day @soft-decay! I add more changes to this PR and now it can be merge-ready. Can you also review changes and if you happy with it too, like me, you can uncheck WIP status and I merge it

[soft-decay]

Yes everything seems good. I think it's ready for merging.

[alexprey]

@soft-decay good job, thaks a lot!