fix lone ESC

implement cmd_clear_minibuf (C-g & ESC)

implement cmd_move_{beginning,end}_of_line

implement cmd_{beginning,end}_of_buffer to do that, refactor redraw_tab and split redraw_body out of it

don't go over the end of the document

1X input, load/edit current URL * rework response code handling * support 10/11 input requests * load a url from minibuffer * edit current url and load it from minibuffer

add line and scroll info in the modeline

slightly improved tabs

allow IMSG_STOP of not-existent requests It's easier to allow the stopping of not-existent requests rather than track which tabs have still ongoing connections and what not and handle this bit of logic in the UI.

added tabs command and improved undefined key handling

add stop_tab api

early add requests to the queue close_with_err does a close_conn which in turns drops req from the queue. Thus it crashes on error, avoid that.

fix out of bound access in the minibuffer code

unkbd lets us give more useful error messages

handle messages even when the minibuffer is active