Don't let a new split pane steal focus when focus follows mouse is on, as long as the pointer remains motionless.

Don't have PTYTextView maintain its own tracking areas because its frame changes all the time. Let SessionView do it and pass the events down. An attempt to fix issue 3974

Fix bug with moving the selection end to the right by words where it went too far after hitting trailing nulls

Fix a bug in imgls.pl: the test for recursion was inadvertantly dropped.

Make cmd-click in an inactive pane in the key window activate semantic history without changing first responder. Issue 3966

A flag test for recursion was inadvertently dropped, so recursion was
always enabled.

Fix a bug where the terminal would sometimes scroll during mouse reporting of wheel events. Add an option to double-report wheel events to work around tmux issue (Issue 3950)

When the app becomes active and focus follows mouse is on, we search for a window under the mouse. Only look for windows on the active space, as we would choose the first fullscreen window we came across on the wrong space before. Issue 3906.

Fix bug where force touch did the wrong thing on URLs. Add some experimental code to open a browser in a popover, but it's off by default.

Punch a hole through the find-cursor stars so you can see the cursor. Don't show the arrow find-cursor view reguarly.

Don't invoke stage on NSEvent during mouseUp because that causes an assertion (heckuva job there Apple)

Respect the quicklook controller stuff.

Make semantic history perform secure copy.

Add quicklook support for images, URLs, and scp.

Fix a bug where force touch actions got done many times.

Add intelligence to guess if a VT100RemoteHost is actually the localhost so we don't try to scp from
localhost.

Keep quicklook in sync with the current session, so each session can have a different quicklook
item.