Weblogin

What's Changed
* Improves forbidden handling for KTH UG, better testing by dbosk in https://github.com/dbosk/weblogin/pull/8


**Full Changelog**: https://github.com/dbosk/weblogin/compare/v1.7...v1.8

What's Changed
* Bugfix: Adds missing `weblogin.` prefix to `AuthenticationError` exception by dbosk in https://github.com/dbosk/weblogin/pull/6
* Adds 403 forbidden to the list of status codes for KTH by dbosk in https://github.com/dbosk/weblogin/pull/7


**Full Changelog**: https://github.com/dbosk/weblogin/compare/v1.6...v1.7

- Bumps depends versions
- Corrects links to issue tracker and releases

**Full Changelog**: https://github.com/dbosk/weblogin/compare/v1.5...v1.6

Fixes a bug that didn't pickle the handlers attribute of `AutologinSession`.

**Full Changelog**: https://github.com/dbosk/weblogin/compare/v1.4...v1.5

- Adds support for LADOK's test system.
- Improves error messages.

**Full Changelog**: https://github.com/dbosk/weblogin/compare/v1.3...v1.4

Improves detecting failed authentication. Adds tests for this feature too.

**Full Changelog**: https://github.com/dbosk/weblogin/compare/v1.2...v1.3