blockgroup 7.x-2.1

This release adds the following new feature to Block Group:

• Issue #2160669 by muhkhwishla: Use underscore instead of hyphen for dynamically generated region names
  #2160669: Use underscore instead of hyphen for dynamically generated region names
• Issue #2129693 by neomen: Add support for Features
  #2129693: Features integration

Block Group 7.x-2.x keeps feature parity with 7.x-1.x but uses underscores instead of dashes for region name (see #2160669: Use underscore instead of hyphen for dynamically generated region names).

The difference between the two branches can be reviewed using the following gitweb URL:

• http://drupalcode.org/project/blockgroup.git/commitdiff/7.x-1.x..7.x-2.x

Note that there is no automated upgrade path between 7.x-1.x and 7.x-2.x. Block Groups need to be created from scratch after the upgrade.