suckless style: don't use '//' for comments

use loop to call arrangelayer

zwlr_layer_shell_v1_layer are ordered by bottom-most first so we can
just use a loop from 3 to 0

Merge pull request #196 from noocsharp/main

die on allocation failure

use wlr_box for previous geom

fix crash when the last monitor is disconnected

Merge pull request #187 from fauxmight/new-clients-printstatus

Newly launched or closed clients ALWAYS generate status update

Merge pull request #149 from xi/fix-grabc-unmap

reset cursor mode when grabc is unmapped

remove typedef `Decoration`

die on allocation failure

Merge pull request #160 from Humm42/closepipes

-s: close unused fds

Newly launched or closed clients ALWAYS generate status update

Prior to this change, if a client whose tag(s) are not currently
selected is launched or killed, no update to status was printed and
status bars being fed by printstatus() did not update newly active
or newly inactive (but unselected) tags.

Merge branch 'wlroots-next'

wlroots 0.15.0 was released

Merge branch 'main' of github:djpohly/dwl

explicitly create renderer and allocator

autocreate was removed

`wlr_xdg_surface.configure_serial` has been moved into `wlr_xdg_surface_state`

as seen in swaywm/wlroots@0e34208

Merge branch 'wlroots-next' of github:djpohly/dwl into wlroots-next

-s: close unused fds

dup2 doesn’t close fds, it only duplicates them.  The old ones weren’t
closed, causing problems (like dwl blocking due to the child process
never reading from the reading end, even if stdin has been closed).

Merge pull request #152 from ARDiDo/no_redundant_xcursor

remove redundancies in xcursors

Remove redundant xcursor manager

Merge pull request #150 from Sevz17/wlroots-next

client_pending has been renamed as pending in wlr_layer_surface_v1