Log Message:
py-prompt_toolkit1: added version 1.0.18

1.0.18: 2019-10-03
Fixes:
- The 1.0.17 build contained files from the 2.0 branch and was broken because
  of this.

1.0.17: 2019-10-03
Bug fixes:
- Handle HANDLE sizes correctly on windows. This made things break randomly on
  64 bit systems.

1.0.16: 2019-04-12
Fixes:
- Fixes DeprecationWarning when trying to import collections.Mapping.