Vilfo-api-client

Thanks to contributions from frenck and bouwew, this new version fixes some issues with (incorrectly) depending on an outdated version of the third-party semver package.

Thanks again for the contributions! :tada:

What's Changed
* Bump certifi from 2021.10.8 to 2022.12.7 by dependabot in https://github.com/ManneW/vilfo-api-client-python/pull/4
* Add missing semver package to package requirements by frenck in https://github.com/ManneW/vilfo-api-client-python/pull/8
* Fix semver issue the proper way by bouwew in https://github.com/ManneW/vilfo-api-client-python/pull/9

New Contributors
* frenck made their first contribution in https://github.com/ManneW/vilfo-api-client-python/pull/8
* bouwew made their first contribution in https://github.com/ManneW/vilfo-api-client-python/pull/9

**Full Changelog**: https://github.com/ManneW/vilfo-api-client-python/compare/0.4.1...0.5.0

Downgrade `semver` to version 2 to avoid conflict with other version of the package used by home-assistant/core.

This is a patch-level release.

Per the contribution from scop (thanks!), the root-level `tests` directory (and possible future sub-directories) are now excluded from the packaging.

The exception handling is improved by having a couple of additional exception classes available.

The client now also wraps all exceptions from the `requests` library in its own exception class.

Minor adjustment in Client constructor to allow for better mocking during testing.