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

document status information and <&- in README

As mentioned in #158.

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

client_pending has been renamed as pending in wlr_layer_surface_v1

as seen in swaywm/wlroots@59fa363

Merge branch 'main' into wlroots-next

simplify fullscreen expression

Merge branch 'main' into wlroots-next

simplify client_for_each_surface

All the XDG surface iterator does is iterate the main wlr_surface, then
iterate the popups.  If we inline that function, we can merge part of it
with the X11 case.

Merge branch 'main' into wlroots-next

update deprecated xkb function name

Merge pull request #145 from PalanixYT/wlroots-next

wlr_layer_surface_v1_close has been replaced by wlr_layer_surface_v1_…

wlr_layer_surface_v1_close has been replaced by wlr_layer_surface_v1_destroy

Merge pull request #136 from guidocella/presentation-time

implement the presentation time protocol