Bump version to v0.3.0 for release

Author: fspoettel

geoclustering/version.py

@@ -1,8 +1,8 @@
 _MAJOR = "0"
-_MINOR = "2"
+_MINOR = "3"
 # On main and in a nightly release the patch should be one ahead of the last
 # released build.
-_PATCH = "1"
+_PATCH = "0"
 # This is mainly for nightly builds which have the suffix ".dev$DATE". See
 # https://semver.org/#is-v123-a-semantic-version for the semantics.
 _SUFFIX = ""