implement focusmon and tagmon

focus follows mouse

add incnmaster and setmfact commands

add toggletag and toggleview

add tag and view functions

implement floating windows

turn focusnext into dwm's focusstack

set normal and dwm-like defaults in config.def.h

move config.h to config.def.h

add setlayout function

layouts: tile and floating

Behavior's still a little wonky but positioning is there.

"root" color was easy to make configurable

introduce rules for monitor configuration

(with dwm, this would already have been done by the X server)

add spawn and termcmd

implement Button: movemouse, resizemouse

start factoring Key actions into functions

some options I like

Start with tinywl

Add a config.h into which configurables can be moved.