Bump minimum fbchat-asyncio version and make dev build

mautrix_facebook/__init__.py

-__version__ = "0.1.0.dev8"
+__version__ = "0.1.0.dev9"
 __author__ = "Tulir Asokan <tulir@maunium.net>"

setup.py

@@ -27,7 +27,7 @@ setuptools.setup(
         "ruamel.yaml>=0.15.94,<0.16",
         "commonmark>=0.8,<0.9",
         "python-magic>=0.4,<0.5",
-        "fbchat-asyncio>=0.2.0,<0.3.0",
+        "fbchat-asyncio>=0.2.1,<0.3.0",
         "SQLAlchemy>=1.2,<2",
         "alembic>=1,<2",
     ],