• build: convert to pyproject.toml
• typing: add full typing
• ci: drop unmaintained actions

Fixes:

• worker: another refactor for wait-behind - use dedicated code path for it, following main path makes things too complicated. Fixes the problem of missing node location events.
• nodeinfo: set more fields on dead node

Fixes:

• status: fix crash on dead node

Fixes:

• worker: fix merge-leaf watermark

Fixes:

• worker: another wait-behind fix - avoid too eager switch.

Cleanups:

• Additional typing improvements.

Fixes:

• worker: detect if wait-behind is finished

Fixes:

• status: handle root with random provider

Features:

• takeover: handle merge workers on takeover
• takeover: move switch of other subscriber before takeover

Features:

• status command improvements:
  • Switch --compact for shorter output.
  • Coloring when lagging.
  • Order by node name.

Cleanups:

• Disable "universal" build (py2+3)
• Fix release uploads.

Cleanups:

• Drop Debian packaging
• style: use compact super()
• ci: use new path/env syntax
• Add py.typed