prepare for 0.18.0 release

prepare for a release

prepare for a release

https://github.com/shlomif/pysol_cards/issues/4

prepare for a release by updating ver

prepare for a release by updating Changes

bump ver

setup.cfg: use underscores for identifiers

Hyphens are deprecated in newer versions of setuptools:
```
* Usage of dash-separated 'author-email' will not be supported in future versions. Please use the underscore name 'author_email' instead
* Usage of dash-separated 'description-file' will not be supported in future versions. Please use the underscore name 'description_file' instead
* Usage of dash-separated 'home-page' will not be supported in future versions. Please use the underscore name 'home_page' instead
```

Tweaked setup.cfg to use underscores intead.

Bug: https://bugs.gentoo.org/796416
Signed-off-by: Sam James <[email protected]>

bump version

add single_deal_args_parse.