Add subselect to query builder
Ensure cache forget functions properly return success (or failure) as a boolean
Update DatabaseStore.php

Forget always return true
Upgrade branch alias on master branch.
Merge branch '4.2'
Update version on master.
Fixed master branch alias
Merge branch '4.2'
Merge branch '4.2'
Merge pull request #4379 from GrahamCampbell/4.3-composer

[4.3] Fixed Master Branch Alias
Merge branch '4.2'
4.3 updates
Merge pull request #4385 from GrahamCampbell/4.3-new

[4.3] Updates - Followup To #4379
Merge.
Fixing conflicts and merging.
Merge branch '4.2'
Merge branch '4.2'
Merge branch '4.2'
Fix conflicts and merge.
Merge branch '4.2'