Anchovy

What's Changed
* Add system for reporting/discovering Step dependencies by pydsigner in https://github.com/pydsigner/anchovy/pull/14
* Allow changing the Context subclass used by anchovy.cli.run_from_rules()
* Export useful classes and functions through the anchovy toplevel

**Full Changelog**: https://github.com/pydsigner/anchovy/compare/v0.4.0...v0.5.0

* Remove support for Step functions.
* Rename `anchovy.helpers` to `anchovy.paths`.
* Turn matcher and path calculator functions into Matcher and PathCalc classes.

* Improve `match_re()`, enhancing behavior and fixing significant edge-case problem.

**Full Changelog**: https://github.com/pydsigner/anchovy/compare/v0.3.5...v0.3.6

* Fix packaging bugs.

**Full Changelog**: https://github.com/pydsigner/anchovy/compare/v0.3.4...v0.3.5

* Fix broken release workflow.

**Full Changelog**: https://github.com/pydsigner/anchovy/compare/v0.3.3...v0.3.4

* Fix packaging issues.

**Full Changelog**: https://github.com/pydsigner/anchovy/compare/v0.3.2...v0.3.3