Move current_sha method to helper
Bump gem
Add provenance info for addresses
Add address part provenance to address
Merge branch 'master' of github.com:OpenAddressesUK/distiller into feature-add-provenance-for-addresses

Conflicts:
	Gemfile.lock
Merge pull request #4 from OpenAddressesUK/feature-add-provenance-for-addresses

Add Provenance information to addresses