Release candidate 3.1.0-RC1

[cazfi]

The changes since beta4 are mainly bugfixes (full list).

The major changes in Freeciv 3.1 are new Qt6- and gtk4-clients, improved balance for civ2civ3 ruleset, experimental meson based build system, and a whole lot of extra flexibility to create custom rulesets.
See the summary of changes since 3.0.x.

Source code is available here. Compiled Windows packages aren't available yet, but are expected soon.

If no showstopping bugs are reported in the near future, a very similar build will become the next stable release, 3.1.0. Please report bugs you find on our bug tracker (rather than on this forum) so we don't lose track of them.

[cazfi]

Windows Installers are available.