Briefly show tabs in fullscreen as a floating view when the current tab changes. No long resize the tabview when showing tabs because you held cmd.
Add on-by-default pref under appearance to turn off flashing fullscreen tabs when switching tabs.
Change some shortcuts to make more sense. Command history is now cmd-shift-; to match autocomplete's cmd-;. Recent directories is now cmd-opt-/, since / goes with paths. The cursor guide is moved to cmd-opt-;, which was freed up.
Accept escape to close popups if there are no entries.
Fix bug where auto command history window would open while running a command (most reasily repro'ed with git difftool -x vimdiff) because showing the ACH window was done with a delayed perform. This cancels the delayed perform when hiding the window.