Merge branch 'v0.7/patch-swallow' into v0.7/patched-base

Fix singletagset-ipc

Merge branch 'v0.7/singletagset-sticky' into v0.7/patched-base

singletagset-sticky

sticky

Fix ghost tag usage

Merge branch 'patch/singletagset-pertag' into v0.7/patched-base

Fix singletagset

Merge branch 'v0.7/singletagset-ipc' into v0.7/patched-base

Merge branch 'v0.7/ipc' into v0.7/patched-base

singletagset-ipc

- Correctly identify vacant tags,
- Add active_other state that says a given tag is active on another monitor

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

Fix ghost tag usage

singletagset

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

implement swallow

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]