Back to development: 4.0.0a2

[ci skip]

Author: mauritsvanrees

setup.py

@@ -2,7 +2,7 @@
 from setuptools import setup
 
 
-version = "4.0.0a1"
+version = "4.0.0a2.dev0"
 
 long_description = (
     f"{Path('README.rst').read_text()}\n{Path('CHANGES.rst').read_text()}"