/stack and /stack/<frame> now accept exclude_sub_params parameter
Attempt faster GUI updates of the stack

Get the entire stack in one request, without the sub params.
Determine differences, add/move/delete tabs/panes.

When a code pane is first shown, re-retrieve only that frame and
include the function params so we can render the args bar at the
top of the pane
only update the GUI if a stack frame changes its frameno or line
Don't detach a code pane when reordering stack tabs

This will keep the pane from scrolling all the way to the top