Conventional commit cli

A Conventional commit cli.
`convco` gives tools to work with [Conventional Commits][1].

`convco` gives tools to work with [Conventional Commits](https://www.conventionalcommits.org/). 

The tool is still in early development.
It provides already the following commands:

For now it just prints out the features and fixes for each version.

It is inspired by [conventional changelog][2].
Configuration follows the [conventional-changelog-config-spec][3]

[1]: https://www.conventionalcommits.org/
[2]: https://github.com/conventional-changelog/conventional-changelog
[3]: https://github.com/conventional-changelog/conventional-changelog-config-spec/blob/master/versions/2.1.0/README.md