SCNetworkReachability: new API in XamMac 1.4
SCNetworkReachability: Update README.md with Screenshot
DockAppIcon: clean up and modernize [#8834]
AnimatingViews: fix control constraints #12422
StillMotion: don't crash without a capture device #12411
NSImageName: new sample
NSImageName: update screenshot
Merge branch 'xammac-1.4'