Added ability to have lockwait timeout to background data partitioning.
Changed version numbers from 1.4.1 to 1.4.2 for merging.
Merge remote-tracking branch 'upstream/master'

Conflicts:
	CHANGELOG
	META.json
	pg_partman.control
Moved update file to correct location.
Fix bug in migration file per Keith.
Merge pull request #11 from jberkus/master

Add Lockwait functionality to background partitioning