Start new development cycle

CHANGELOG.md

@@ -1,5 +1,7 @@
 # Changelog
 
+## [unreleased]
+
 ## [0.21.0] - 2020-12-20
 
 ### Added

federation/__init__.py

@@ -6,7 +6,7 @@ from federation.exceptions import NoSuitableProtocolFoundError
 if TYPE_CHECKING:
     from federation.types import RequestType
 
-__version__ = "0.21.0"
+__version__ = "0.22.0-dev"
 
 PROTOCOLS = (
     "activitypub",