[BUGFIX beta] Single variable declaration with assignment.
Merge pull request #10042 from jbrown/single-variable-declaraction

[BUGFIX beta] Single variable declaration with assignment.
Remove Handlebars related packages.

They are not used for building the project (as of 1.10.0-beta.1) but are
confusing to see (mostly duplicated) helpers in more than one place.
Remove lines with only spaces.
Merge pull request #10043 from jbrown/cleanup-blank-lines

Remove lines with only spaces.
[BUGFIX beta] Single var declaration with assignment per line.
Merge pull request #10045 from rwjblue/single-var-declaration

[BUGFIX beta] Single var declaration with assignment per line.
Use jscs for style checking.
Exclude files with invalid ES6 syntax.
Bump emberjs-build to enable jscs checking.
Add DISABLE_JSCS flag to "fast prod build" comment in Brocfile.js.
Merge pull request #10046 from rwjblue/code-style-rules

Enable Code Style checking with JSCS.
Require curly brackets.
Merge pull request #10047 from rwjblue/require-curlies

Require curly brackets.
expose Registry as Ember.Registry
Merge pull request #10048 from emberjs/expose-registry

expose Registry as Ember.Registry
[BUGFIX beta] Remove trailing commas.
Disallow trailing commas with JSCS.
Merge pull request #10049 from rwjblue/remove-trailing-commas

Cleanup trailing commas.
Cleanup trailing whitespace.