Fix to work with pertag

Fix seltags, focusclient after selmon changed

Merge remote-tracking branch 'origin/v0.7/ipc' into v0.7/singletagset-pertag-ipc-compat

Fix singletagset

Apply singletagset-pertag

Fix ghost tag usage

singletagset

implement dwl-ipc-unstable-v2 https://codeberg.org/dwl/dwl-patches/wiki/ipc

bump version to 0.7-rc1

prepare CHANGELOG.md for 0.7

changelog: add new 'unreleased' section

use the parent scene node to determine if move clients out of LyrFloat

[sevz: commit message is mine]

Reapply "place child clients above fullscreen clients"

This reverts commit 043ab3ac1335d7a1cd84fe0f9cea8056977211a4.

Merge branch 'wlroots-next'

bump to linux-dmabuf version 5

bump version to 0.6

prepare CHANGELOG.md for 0.6

Revert "place child clients above fullscreen clients"

This does not work as intended. Lets revert it temporarily and add it back
after the release.

This reverts commit 298949bbc4eae8cedb9cdd11cfc9ebd139ac5d5f.

Fix applybounds

Applybounds doesn't move client when it overlays
only with border with monitor to the right.

Apparently, c->geom.width already includes the border
as well.

feat: focus empty monitor when clicked

use round(3) and ceilf(3) from the math library

ΔSLOC: -1