Small perf and debuggability tweaks
Added caching to lazy injection validation
Added 'onLookup' factory hook for type injection validation
Underscored 'onLookup' and 'lazyInjections' hooks
Fixes #9852 - inconsistent return value in OrderedSet
Remove nested defeatureify stripped statements for inline-if.
Merge pull request #9760 from slindberg/injected-properties-part-ii

Address concerns with injected properties feature
[FEATURE] ember-metal-injected-properties: enable
Merge pull request #9858 from rwjblue/remove-nested-stripping

Remove nested defeatureify stripped statements for inline-if.
Merge pull request #9859 from rwjblue/injected-properties

[FEATURE] ember-metal-injected-properties: enable
Merge pull request #9853 from aexmachina/ordered-set-returns-undefined

[bugfix beta] Fixes #9852 - Inconsistent return value in OrderedSet
Removes obsolete file
Merge pull request #9864 from twokul/removes-file

Removes obsolete file
Minor cleanup
fix documentation for run.later
Post release version bump.
Merge pull request #9868 from AmilKey/master

fix documentation for run.later
Merge pull request #9867 from twokul/inline-compiler-cleanup

Minor cleanup
[BUGFIX beta] Allow makeBoundHelper to be a sub-expression.
Merge pull request #9871 from rwjblue/make-bound-subexpression

[BUGFIX beta] Allow makeBoundHelper to be a sub-expression.