URL: https://github.com/apache/beam
Version: 72cbd99d6b62bc7ed16dbd1288cd61d54e8bda37
License: Apache License 2.0: https://opensource.org/licenses/Apache-2.0
Local Modifications:
  - Narrow checkout of sdks/go/pkg/beam/runners/direct
  - Modified package to use disksort for CoGBK implementation
  - Added BUILD file