update comments and remove debugging printf

Define monitor order with monrules[]

The order in which monitors are defined in monrules[] actually matters.

Monotors that aren't configured in monrules[], it will always be the
leftmost.

don't reset the cursor image

...in internal calls to restore pointer focus. Necessary for the
unclutter patch, and there's no harm in avoiding this call even in
mainline; might prevents issues in same edge cases.

say TODO

just wtf is XXX supposed to be? It sounds like a pornographic thing.

rename drw

It's impossible to understand that this stands from drawable if you're
not familiar with dwm's code.

don't notify of activity

...or update selmon when we just want to restore pointer focus.

deactivate the focused client on overlay focus

replace shouldfocusclients with checking old

And don't activate clients while an overlay is focused.

fix keyboard focus with overlays

Don't let internal calls to motionnotify(0) meant to update the pointer
focus from maplayersurfacenotify and destroylayersurfacenotify also
shift the keyboard focus to the surface under the cursor with
sloppyfocus.

ensure that xwayland cursor defaults to left_ptr

Don't show an X cursor when closing an Xwayland window or with certain
dropdowns.

Based on https://github.com/djpohly/dwl/pull/32

enable adaptive sync

The comment in this function's declaration says the backend is free to
ignore this setting, so maybe there's no need to make it configurable?

use bool

Because it's 2020. Passing integers to wlroots variables and functions
with bool in their signature is silly.

remove -Werror=declaration-after-statement

wtf is the point of this crap? It makes the code harder to follow,
increases the line count and made me fail compilation a million times.
We shouldn't blindy follow everything about suckless's style.

remove goto when the border is 0

Rendering 0-dimension rectangles no longer crashes wlroots.

remove useless assignment

calloc already initializes ints to 0.

s/maprequest/mapnotify

This should be consistent with other function names instead of keeping
the X name.

Added support for natural scrolling

Added basic tap-to-click for touchpad users

Made scalebox the way sway does it

Scaling a wlr_box without rounding can sometimes make the borders not
connected and nice. I noticed this when setting scale in monrules to 1.2

So I've went and copied what Sway did in desktop/output.c but without
having a second function and now using a random rounding macro I found
on the internet so as to not use round from math.h.

s/prev/old

Be consistent with the rest of the code and dwm