Combadge

<!-- Release notes generated using configuration in .github/release.yml at main -->

What's Changed
⚡️ Improvements
* OPT: pass original exception into `BackendError` 🧑‍💻 by eigenein in https://github.com/kpn/combadge/pull/101
🎨 Other changes
* OPT: Update all non-major dependencies ⬆️ by renovate in https://github.com/kpn/combadge/pull/100


**Full Changelog**: https://github.com/kpn/combadge/compare/4.1.1...4.1.2

Documentation strings update, no functional changes

**Full Changelog**: https://github.com/kpn/combadge/compare/4.1.0...4.1.1

<!-- Release notes generated using configuration in .github/release.yml at main -->

What's Changed
⚡️ Improvements
* NEW: implement base `CombadgeError` and `BackendError`, re-organize the docs ⚡️ by eigenein in https://github.com/kpn/combadge/pull/99
🎨 Other changes
* OPT: Update all non-major dependencies ⬆️ by renovate in https://github.com/kpn/combadge/pull/98


**Full Changelog**: https://github.com/kpn/combadge/compare/4.0.3...4.1.0

<!-- Release notes generated using configuration in .github/release.yml at main -->

What's Changed
🎨 Other changes
* OPT: rename `BaseBoundService` internal attributes to avoid name clashing 🧑‍💻 by eigenein in https://github.com/kpn/combadge/pull/97


**Full Changelog**: https://github.com/kpn/combadge/compare/4.0.2...4.0.3

<!-- Release notes generated using configuration in .github/release.yml at main -->

What's Changed
⚡️ Improvements
* OPT: add `__slots__` to more dataclasses ⚡️ by eigenein in https://github.com/kpn/combadge/pull/96


**Full Changelog**: https://github.com/kpn/combadge/compare/4.0.1...4.0.2

<!-- Release notes generated using configuration in .github/release.yml at main -->

What's Changed
⚡️ Improvements
* OPT: add `__slots__` to the dataclasses ⚡️ by eigenein in https://github.com/kpn/combadge/pull/95


**Full Changelog**: https://github.com/kpn/combadge/compare/4.0.0...4.0.1