add sway LICENSE file

part of the code in dwl is taken from sway, so credit it.
dwm and sway are both licensed under the MIT license

update IRC channel

add dwl(1)

Documentation is good.  Man pages are documentation.  A program without
a man page is worthless.

clients now works as expected in drag motion

implement drag and drop

For brevity, only a single drag icon at a time is supported.

Co-authored-by: Leonardo Hernández Hernández <leohdz172@protonmail.com>

Update issue templates

only skip frames if there are visible clients that have a resize

remove a useless resize in mapnotify()

applyrules() calls setmon() which calls resize()

improve floating detection

mostly copied from sway

wlr_seat_set_keyboard() now takes wlr_keyboard as parameter

Merge branch 'main' into wlroots-next

Merge pull request #204 from djpohly/scenegraph3

merge scenegraph3

remove independents list

Merge branch 'wlroots-next' into scenegraph-wlroots-next

follow up wlroots input device events renaming

remove unneeded variables

attach presentation to scene

update README.md

Merge branch 'main' into scenegraph

do not allow set client size less than its min size