Set find bar text field's apppearance to light when there's a dark theme so it is legible. Issue 6330

When you perform a new search, begin the query one character in front of the find cursor. That way if the new query should match at the same starting point as the currently highlighted result, it will simply extend it. I think I broke this because it only worked by accident before and I made SearchResults make sense recently. Issue 5949

- Resizing a session would clear the find state, removing search results until the next search
- Clearing a buffer would remove highlights but not search results so they wouldn't reappear

Issue 5865.

Restore the find progress bar. When you do a search, perform the first chunk of work immediately. Make the timer run regardless of runloop mode so you can hold down cmd-shift-G and search fast.

Enable warnings for APIs that may not be supported. Add macros to selectively disable them. Move touch bar support into a category to do this sanely since it had a LOT of warnings.

Add smart case sensitivity to find on page as the default option. Automatically upgrade users from case-insensitive substring search to smart case sensitivity. General style cleanup of find view controller code. Issue 4690

Add an on by default experimental option to use Core Animation layers. On my iMac, this gives a dramatic speedup (from 15 to 30 fps on my vimdiff benchmark).

Merge in code from hotkeyWindowsInPanels branch. Support multiple hotkey windows. Update the shortcut input view. Add support for floating panel terminal windows.

Otherwise the focus ring is partly drawn above the title bar until the search field
doesn't overlap with the bar

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.

Use DEPRECATED_ATTRIBUTE to mark functions deprecated in the comments.

Fix XCode 7 warnings and failing tests. Fix a bug where lastDirectory was called on a CommandUse object because it was incorrectly typed as a CommandHistoryEntry object.

Also removes references to -[NSColor CGColor] which only exists in 10.10, and changes the color gallery URL to https.

More aggressive fix for issue 3496. The original fix allowed
a possibility for enqueued events to be processed before
the text field gained focus, so that for example typing
cmd-F followed by 'a', the 'a' would go to the iTerm window.
This fix ensures that enqueued events go to the search field.

Fix a bug where you could open find, hit a key, close find, and then results would get highlighted because of the delay inserted before find for very short queries. This commit sets the active state without calling doSearch when closing the find view. That prevents anything from happening in the dispatch_after.

Move source into sources/ directory. Delete a few unused images in the process and fix a reference to an Aqua image in FindView

Make Cmd-F show and select the find field, not toggle it. Introduce a delay when performing very short searches. When a find query is erased, remove all highlights. Redraw the textview when highlights are removed.

Move find code from iTermAppDelegate to PseudoTerminal, so at least if there is no terminal session then the find commands in the menu are disabled.

Add support for saved search keyboard shortcuts and, correspondingly, temporary searches in the FindViewController.

Increase warning levels and fix warnings. The only inexcusably disabled warning (possibly) is for comparisons of different signs, simply because there are so many of them, in large part because methods like -count and -length return unsigned integers. IMO, the proliferation of unsigned ints is more dangerous than turning off the warning.

Fix bug where iTermSearchField would capture arrow key presses even when it wasn't key. Became an issue first with the command history tool. Fixes bug 2865.

optimize reverse search for long lines, which used to beachball. Fix crash when closing a window that is doing a search.