Features
- **logs**: Include scope in changelogs
([281](https://github.com/python-semantic-release/python-semantic-release/pull/281),
[`21c96b6`](https://github.com/python-semantic-release/python-semantic-release/commit/21c96b688cc44cc6f45af962ffe6d1f759783f37))
When the scope is set, include it in changelogs, e.g. "feat(x): some description" becomes "**x**:
some description". This is similar to how the Node semantic release (and
conventional-changelog-generator) generates changelogs. If scope is not given, it's omitted.
Add a new config parameter changelog_scope to disable this behavior when set to 'False'