v0.7

New functionality:

• New transforms: EnsembleByKey, Cacher Timer; see the documentation.

Updates:

• Miniconda version 4.3.21, including Python 3.6.

• CNTK version 2.1, using Maven Central.

• Use OpenCV from the OpenPnP project from Maven Central.

Improvements:

• Spark's binaryFiles function had a regression in version 2.1 from
  version 2.0 which would lead to performance issues; work around that
  for now. Data frame operations after a use of BinaryFileReader (eg,
  reading images) are significantly faster with this.

• The Spark installation is now patched with hadoop-azure and
  azure-storage.

• Includes additional bug fixes and improvements.