Start new cycle

Author: hynek

CHANGELOG.rst

@@ -4,6 +4,15 @@ Changelog
 Versions follow `CalVer <https://calver.org>`_ with a strict backwards compatibility policy.
 The third digit is only for regressions.
 
+Changes for the upcoming release can be found in the `"changelog.d" directory <https://github.com/python-attrs/attrs/tree/main/changelog.d>`_ in our repository.
+
+..
+   Do *NOT* add changelog entries here!
+
+   This changelog is managed by towncrier and is compiled at release time.
+
+   See https://www.attrs.org/en/latest/contributing.html#changelog for details.
+
 .. towncrier release notes start
 
 21.1.0 (2021-05-06)

src/attr/__init__.py

@@ -22,7 +22,7 @@
 from ._version_info import VersionInfo
 
 
-__version__ = "21.1.0"
+__version__ = "21.2.0.dev0"
 __version_info__ = VersionInfo._from_version_string(__version__)
 
 __title__ = "attrs"