tinode/chat v0.25.0-beta3

Merged 0.24.7, minor improvements

on GitHub

• Merged changes from 0.24.7
• 1faa4b0 Reject auth level assigned by non-ROOT (previously it was silently ignored).
• 6939413 Transitioned py_grpc build from setup.py to pyproject.toml
• edba87c Replaced deprecated pkg_resources with importlib.metadata

Full Changelog: v0.25.0-beta1...v0.25.0-beta3