[FEATURE string-parameterize] Revert feature.

During the weekly core team meetings this feature has been determined to
be a better fit for an external plugin.
[FEATURE ember-testing-simple-setup] Revert feature.

During the weekly core team meetings it was decided that while the
intentions were good, this feature is really just covering up the real
issue but not addresing the underlying problem.
Merge pull request #4418 from teddyzeenny/document-element

Use documentElement instead of body for ember-extension detection
Merge pull request #4452 from rjackson/revert-string-parameterize

[FEATURE string-parameterize] Revert feature.
Merge pull request #4453 from rjackson/revert-ember-testing-simple-setup

[FEATURE ember-testing-simple-setup] Revert feature.
Update CHANGELOG for 1.5.0-beta.3.
Remove unused distros from Assetfile.

This takes `rake dist` from 25 seconds to 13 seconds.
Merge pull request #4455 from rjackson/remove-stupid-crappola-from-assetfile

Remove unused distros from Assetfile.
Speed up sendEvent by using direct function calls and `call` instead of `apply` where possible
Revert "Remove unused distros from Assetfile."

This reverts commit 247c9d0ecaa00b398eb0112c6ce1e326903ecaa3.
Merge pull request #4456 from rjackson/revert-removal-of-distros

Revert "Remove unused distros from Assetfile."
Use newly added `apply` and `applyStr` helpers elsewhere. Also minify them so they're inlined.

Breakdown of arguments length while running the Ember test suite:
{0: 444966, 1: 62482, 2: 23473, 3: 14270, 4: 3000, 5: 755}
Fix case where args isn't passed

Scumbag @ebryn didn't rerun all the tests before pushing
Revert "[FEATURE composable-computed-properties] Composable Computed Properties"

This reverts commit f34661cb86d1c359fdc2b1cc1b746c649b97e216.

Conflicts:
	features.json
	packages/ember-metal/lib/array.js
	packages/ember-metal/lib/computed.js
	packages/ember-metal/lib/enumerable_utils.js
	packages/ember-runtime/tests/computed/compose_computed_test.js
Remove unreachable return from blockHelperMissing helper
Merge pull request #4457 from joliss/unreachable-return

Remove unreachable return from blockHelperMissing helper
WIP toward Ember inspector hooks for detecting models with a module-based resolver.
More WIP, now with a container-debug-adapter
Added TODOs
Initial fixes for this branch to allow extension-support to be AMD Resolver compatible