Release v2.1.3 - 2015-07-07

Tag release v2.1.3

References:
#854, #855, #857, #860, #863, #865, #867

• Feature - Aws::AutoScaling - Adds support for step policies. Step scaling
  policies allow customers to scale their Auto Scaling groups based on the
  magnitude of the alarm breach, giving them more control over how Auto Scaling
  responds to an alarm breach and enables them to scale their groups faster.

• Feature - Aws::EC2 - Amazon Elastic Block Store snapshot copy support for
  customer-managed encryption keys.

• Feature - Aws::EC2 - Added a Aws::EC2::Route resource class with the
  associated #delete and #replace operations.

• Issue - Aws::DynamoDB - The Aws::DynamoDB::Client#stub_data method will
  now observe the configured :simple_attributes option and conditionally
  accept and return simple attribute values.

  See related GitHub pull request #863

• Issue - Resource - Fixed behavior of #wait_until option max_attempts: nil
  to match documentation and allow unlimited retries. Default number of retries
  remains at 10.

  See related GitHub pull request #855