v1.7.0

ABI summary:

• mirserver ABI bumped to 53

Enhancements:

• [X11] Add basic window decorations
• [X11] Add a configuration option to specify the Xwayland executable
• [X11] Code cleanup: fix threading, initialization, style, etc.
• [server/input] Use a sorted map for outputs
• BasicWindowManager requests on unknown windows should noop

Bugs fixed:

• [X11] Don't restart Xwayland if we killed it deliberately (Fixes: #1169)
• [X11] We don't need to stop Xwayland when pausing the Mir server. (Fixes: #1188)
• [wayland-platform] Apply output scale. (Fixes: #1133)
• [wayland] (cursor code) don't assume PixelSource::read() will execute the do_with_pixels functor. (Fixes: #1180)
• [packaging] Add libwayland-dev to Build-Depends
• Fix clang found clangers