Publish 2.0.0a0

SHA256 hashes:

jupyter_server-2.0.0a0-py3-none-any.whl: 7be4a24d79bace14bdf83208e32b9403a38890f747ff889c107a19a5e702d6f9

jupyter_server-2.0.0a0.tar.gz: 6704e2791a4a508d8e78d323ed7a5ff94a9f869fb06edd7d243b1830aea1c255

Author: github-actions[bot]

jupyter_server/_version.py

@@ -2,5 +2,5 @@
 store the current version info of the server.
 
 """
-version_info = (1, 16, 1, ".dev", "0")
+version_info = (2, 0, 0, "a", "0")
 __version__ = ".".join(map(str, version_info[:3])) + "".join(version_info[3:])