python-retrying-1.3.3-bp153.1.18

- Remove duplicated license information from description.

- convert to singlespec

- update to version 1.3.3:
  - Add minimum six version of 1.7.0 since anything less will break
  things
- Add python-six as Requires

- update to 1.3.2:
  - Ensure we wrap the decorated functions to prevent information loss
  - Allow a jitter value to be passed in
  - Add requirements.txt to MANIFEST.in to fix pip installs
  - Add upstream six dependency, remove embedded six functionality
  - Add support for custom wait and stop functions

- Initial package