* working on cmd restart logic
* button to restart command
* bind Cmd-R to restart selected command, and Cmd-Shift-R to restart last command. Browser Refresh is now Option-R. also fix 'clear' command to not delete running commands (like archive). some small changes to keyboard utility code to always set 'alt' and 'meta' appropriately. use 'cmd' and 'option' for crossplatform bindings
* focus restarted line
* update termopts, use current winsize to set termopts for new command
* add cmd.restartts to track restart time
* display restarted time in line w/ tooltip with original time
* add restartts to line:show
* sync schema.sql with running schema
* remove incognito field from history table. also don't add empty FeState vars
* history updates, add festate, durationms, exitcode, status, and tags into history table
* update screen/session delete, and clear to no longer purge history items. move deleted screens/sessions into a tombstone table.
* update schema
* fix alias -> fn
* quiet the security warning about an unchecked byte conversion. no real security issue here, but add a range check for good measure.
