Merge pull request meteor#415 from meteor/release-2.7

Release 2.7

Merge remote-tracking branch 'origin/master'

Update dependencies and publish

Updates History

Bump blaze package version to 2.3.4

Version bump.

Update .versions files for recently republished packages (meteor#243)

Version 2.3.0 released.

Version 2.2.1 released.

Version bump.