Pip2conda

Development release.

Changes:

- added support for YAML-format output files [7]
- new `--disable-mamba` command-line option [9]

The full list of all changes related to this milestone can be seen at
<https://github.com/duncanmmacleod/pip2conda/pulls?q=milestone:0.2.0>.

First release.

This is the first release of this project, which was extracted from the source repository for GWpy by the author, and released under the same license.