Mir 0.30.0 release No client or server ABI changes. Notable changes: * Initial incorporation of the WLCS test-suite * Many fixes to Wayland protocol support: - SessionAuthorizer::connection_is_allowed is now called on Wayland client connection, required for Wayland clients to work in Unity8. - Keyboard state is now sent of focus, resolving strange modifier behaviour when switching between clients (Issue: #155) - A number of crash fixes - Initial, experimental, support for xdg-shell (v6). Set the `MIR_EXPERIMENTAL_XDG_SHELL` environment variable to enable. * Pointer events are now sent to windows that move underneath the pointer * CI is now enabled for Fedora 27 * CMake's Ninja generator is now supported * Miscellaneous other bug fixes.