Stable release 3.0.7

[cazfi]

3.0.7 is a generic bugfix release.

See the full list of changes.

Source code is available in the usual place. Compiled Windows packages aren't available yet, but should follow shortly; we'll post again here when they turn up.

[cazfi]

Windows packages now available.

[cazfi]

Now also Qt-client available via flathub, 3.0.7 being the first version: https://flathub.org/apps/org.freeciv.qt