Release 0.21.0 [skip ci]

Author: zepben-ci

setup.py

@@ -12,7 +12,7 @@
 test_deps = ["pytest", "pytest-cov", "pytest-httpserver==1.0.8", "trustme==0.9.0"]
 setup(
     name="zepben.eas",
-    version="0.21.0b2",
+    version="0.21.0",
     description="Python SDK for interacting with the Evolve App Server",
     long_description=long_description,
     long_description_content_type="text/markdown",