Increment version to 0.6.1.

Add CHANGELOG going forward.

Update LICENSE for 2014.
Update gemspec dependencies.

Update rspec-sleeping_king_studios dependency to release version.

Remove local dependencies on pry, and yard. Fuubar proved more
stubborn, though.
Increment version to 0.6.2.
Merge branch 'master' into feature-ordering
Refactor Orderable spec shared examples.

Current spec status: 336 examples, 0 failures in 1.1 seconds.
Add :as, :order_nil? options to Orderable.

Current spec status: 352 examples, 0 failures in 1.16 seconds.