v1.2.4

This is a technical release, as WSEdit is switching to a new version scheme as
well as moving to the BSD-3 license.

New Versioning Scheme

Version x.y.z[.a] will now have the following meaning:

• x will increment for major rewrites and other milestones.
• y will increment for incompatible changes.
• z will increment for releases.
• a denotes development efforts on top of the current release. No guarantees
  regarding change compatibility are made.

New License

The entire codebase, including the language definitions, is now licensed under
BSD-3.

Other Changes

• Removed the orphaned remains of the test suite.