update comment about client_set_size() as no-op

check if a client is resizing before checking if it's visible

It's not like it's noticeable, but theoretically this is faster

only mark pending resizes as completed checking the configure serial

bump version to 0.4-rc3

do not try to resize if size wouldn't change

do not skip frames if a client is stopped and have a pending resize

Revert "Revert "fix flickering when resizing/spawning windows""

This reverts commit 4a32293548667e68cd9a103e22368b8db1754deb.

disable client's scene node after create it (only XDGShell)

will be enabled when setting up its monitor and arrange it

Bug: https://github.com/djpohly/dwl/issues/306

call arrange() or resize() depending on c->isfloating in commitnotify

force SSD when creating an xdg_toplevel_decoration object

Closes: https://github.com/djpohly/dwl/issues/366
Not sure why GLFW apps do not get mapped when we do not tell them the
decoration method

remove selclient()

selclient() does not work well when dealing newly mapped
clients (specifically those mapped on invisible tags).

This fixes various bugs related to things not working because selclient() would
return NULL.

References: 94c8bd604870365bc201524b63158623e6f32a8f

fix unset fullscreen for all visible clients when mapping a new one

this also changes our policy about when we unset fullscreen:

dwl will unset fullscreen for clients who share tags (and monitor) with a newly
mapped client, it does not matter if the clients are visible or not

call checkidleinhibitor() in arrange() and not in focusclient()

fix checking idle inhibit state

checking `bypass_surface_visibility` first, could cause that even if the idle
inhibitor is being destroyed it will disable idle tracking

and if we couldn't get its scene tree, then assume that the surface is visible

Revert "Revert "Check that inhibitor scene tree is not null""

This reverts commit 035bb99d67b59a84cfc2e911d222fb597591a8be.

Not checking `tree != NULL` result in a segfault if the surface doesn't have a
role (for example because it is a newly created surface)

Closes: https://github.com/djpohly/dwl/issues/359

Check width and height are not negative in client_set_bounds()

get `sel` from focustop() in focusstack()

Fixes: https://github.com/djpohly/dwl/issues/354

Revert "force line-buffered stdout if stdout is not a tty"

This reverts commit deb48ff48b186ff77a7e9d3b3ab724ff4c3c340f.

Fixes: https://github.com/djpohly/dwl/issues/253

implement ext-session-lock-v1

Revert "remove unneeded changes in commitnotify()"

This reverts commit 30c24a53ad2aaa842bc3b028ba0b98e3362dad7c.

Bug: https://github.com/djpohly/dwl/issues/349