[Bugfix beta] if the obj already has the method, don’t bother using call
[Bugfix beta] apply with arguments is slower, as passing around arguments deopts entire function.
[BUGFIX beta] fixing broken computed.sort semantics
[DOC beta] Fix typo, change 'they' to just 'the', per #9373
[BUGFIX beta] Add assertion when morph is not found in RenderBuffer.
[BUGFIX beta] Refactor buffer to be simpler, single parsing code-path

Add rerender blank tagName with omitted start tag tests

Conflicts:
	packages/ember-views/lib/system/render_buffer.js
Change variable naming
[BUGFIX beta] setProperties should handle non-object properties