Changes

Shopkeeper update for snapshot v2.1.1 (#207)
* Updated to latest (snapshot v2.1.1) shopkeeper changes:
 It is now possible to directly get the entity from the shop object.

* Removed empty line.

* Reverted: Using 'Shopkeepers' as dependency again.

* Updated shopkeeper dependency to release 2.2.0.
 Added repository containing shopkeepers releases.

* Don't attempt to resolve snapshots from release repository, and
releases
 (commit: 8bbf433)