Fix find view invocation/dismissal animation when height is less than radius.

We were over-shooting the initial find view bezier curve drawing, making
the curve->line->curve paths discontinuous on both sides.

When an x-of-screen style window is manually resized, forget about the desired rows/columns and simply respect the size the user sets. Fixes issue 4073.

Fix a bug when appending a string after a double-width character. The DWC_RIGHT copied from the predecessoryString was appended at the cursor, causing two copes of it. This commit changes the algorithm to skip over the preexisting DWC_RIGHT. Issue 4058

Send CR instead of NL from the applescript 'write text' command to be more like what happens when you press return. Issue 4067

Fix a bug where you right click on something, the underlying data model changes before the menu shows, and then you pick an action from the context menu and it acts on the changed text. See issue 4048.

Turn off the flicker fixer by default. Some users experience lots of latency because of it and I haven't been able to track it down. For example, issue 4050.

Catch errors from core data. Errors can happen if two copies of iTerm2 are running at once and trying to stomp on the same database.

Allow passing a command argument to the split vertically/horziontally applescript commands (in response to a message on the mailing list subject 'iTerm 2.9 AppleScript: exec command in split session, evenly tile panes')

Fix a bug where deleting a profile would not cause profile list views other than the one in the prefs panel to call reloadData immediately, which causes an assertion as seen in issue 4033.

Change how the 'find cursor' works. In the past, each new search that was did not have the previous search as its prefix would highlight the bottommost result first. Now it behaves more like Chrome's find on page: highlight the next result before the last-highlighted result, or before the last click. Typing into the terminal resets the find state to the bottom. A nice side effect is that we don't need to store the previous search any more. This was brought to light by issue 4035.

Add an advanced preference to toggle whether typing in the terminal window clears the selection. Issue 4029

Clean up the logic around setting pane, tab, and window titles. As noted in issue 4024, split pane title bars weren't updating properly.

Try to make timestamps line up by using a consistent width measurement that depends only on the format, not the specific time. It's calculated by transforming all letters and numbers into the letter M, which ought to leave enough room in most languages.

of trying to do it by hand, which is buggy (for example, skin tone modifiers only modify certain
emoji). This fixes issue 4013.