[FEATURE ember-routing-inherits-parent-model] Enable by default.
[FEATURE ember-routing-bound-action-name] Fix assertion in deprecation.

If the action was in the root of the controller (not in an actions
hash), the lookup would find the actual action function itself,
resulting in us trying to trigger an invalid action (using the functions
toString value).
Allow ES6ification of specific packages.

I used the `container` package as a guinea pig because it was already
assumed to be AMD in the rest of the code, and it does not live
elsewhere as an ES6 project already.

This uses the `es6-module-transpiler` with a custom generator script
(found in `bin/transpile-packages.js`). The custom script does a few
things differently from the `compile-modules` script that comes with the
transpiler:

* Modify the generated package names so that it matches current build
  tooling.

  Examples:

  * A file named `packages_es6/some-package/lib/blahzorz.js` will create a module named
    `some-package/blahzorz`.
  * A file named `packages_es6/some-package/tests/blammo_test.js` will
    create a module named `some-package/tests/blammo_test`.
* Any modules generated from the packages `lib/` directory will be
  transpiled from the `packages_es6/package-name/lib/` directory to the
  `packages/package-name/lib/main.js` file. This file will contain all
  of the modules from the package.
* Any modules generated from the packages `tests/` directory will be
  transpiled from `packages_es6/package-name/tests/` directory to the
  `packages/package-name/tests/package-name_test.js` file.
* At the end of the transpiled test file, all of the testing modules are
  required (to ensure the tests are run).
[DOC beta] Fix highlighting for Ember.Test namespace