Enhancements:

• Make attached surfaces respect exclusive zones
• split mg::Platform into DisplayPlatform and RenderingPlatform
• [gbm-kms] Add --driver-quirks option to avoid probing devices where probing crashes
• [Wayland] Respect --enable-key-repeat with Wayland
• [Wayland] Send timestamps with frame done event
• [Wayland] Send timestamps with frame done event
• [X11 platform] Add hostname to title when remote over X-forwarding
• [X11 platform] Port from XLib to XCB
• [X11 platform] Don't clamp Mir-on-X window size
• [X11 platform] Allow resizing Mir-on-X windows

Bugs fixed:

• Keep track of past surface states
• Place popups on output their anchor is on
• [mirplatform] Fix mirplatform.pc include dirs
• [X11 platform] Fix cursor position on scaled outputs
• [X11 platform] Handle key state changes when window is not focused
• [XWayland] Gracefully handle XWayland errors
• [Wayland] Send bufferless frame callbacks after timeout
• [Wayland] Fix resize of layer shell surfaces
• [Wayland] Check for locked cursor before sending pointer movement
• [Wayland platform] Precise (floating point) pointer events.