Beanclerk

What's Changed
* Improved docs.
* Finished support for loading importers from any module.
* Improved CLI output.
* Added support for modifying config vals via env vars or `.env` file.
* Some breaking changes to importers (Banka Creditas and `prepare_metadata`)


**Full Changelog**: https://github.com/peberanek/beanclerk/compare/v0.0.6...v0.0.7

Improved docs, importer for Banka Creditas has been fixed and works as expected.

**Full Changelog**: https://github.com/peberanek/beanclerk/compare/v0.0.5...v0.0.6

Improvements to docs, refactoring and some breaking changes to the `beanclerk.config` module

**Full Changelog**: https://github.com/peberanek/beanclerk/compare/v0.0.4...v0.0.5

Mostly refactoring, some breaking changes to config file and public API.

Implements a working prototype that imports transactions from Fio banka.

Major rework and refactoring.