Glimmer components

[thec0keman]

• allows for block params and more advanced mustache on % syntax
• adds deprecation API and deprecations for:
  • legacy Ember.View syntax
  • explicit mustache without =

Depends on #271 and #270

Fixes #240

[thec0keman]

@machty I could use your advice on how to move forward with this branch. I think the refactoring was important for making the glimmer component logic work, but it also helped clarify the overall logic a good deal for me. As a result, in the process of working on it it made several bug fixes trivial. (And unfortunately, it would take some extra work to backport them to a pre-refactor version).

I would really like to see the bugfixes and refactoring merged. As far as I know, the work on glimmer components is in line with the current syntax, but I don't think much more can be done until the Ember team finalizes that syntax. I think there is a good case for merging the current work, but with the obvious understanding that as the syntax finalizes some changes may need to be made.

What would you like to see from this branch to get it merged? If it would help I can split up this branch into its different parts (bugs, refactoring, etc.).

Thanks!

[machty]

@thec0keman could you e-mail me at machty@gmail.com? I'd like to discuss giving you commit bit for this repo :)