Verbosemanager

What's Changed
* Added iterate() and finish_iterate() methods by alexhroom in https://github.com/alexhroom/verbosemanager/pull/18
* added black and mypy to push jobs by alexhroom in https://github.com/alexhroom/verbosemanager/pull/21
* removed simple manager by alexhroom in https://github.com/alexhroom/verbosemanager/pull/23
* removed need for abc by alexhroom in https://github.com/alexhroom/verbosemanager/pull/24
* Fixed eraser and improved tests by alexhroom in https://github.com/alexhroom/verbosemanager/pull/26

**Full Changelog**: https://github.com/alexhroom/verbosemanager/compare/v1.2.0...v1.3.0

Changes:
- Changed doc to use sphinx
- Added counter
- Added simplemanager
- Changed decorator name to verbosedecorator
- Separated shared manager features out to mixins
- Fixed 10

This fixes a change to folder structure that broke the packaging of verbosemanager.

First minor release.
New features:
- Added header(), which adds a header to step times without increasing a step. This was originally meant to be in v1.0.0, but it seems to not have been saved correctly.
- Added the verbosify decorator, which allows easier verbose management albeit with less flexibility.

Bugfixes:
- fixes eraser size
- efficiency improvements

Initial release with full VerboseManager class.