Change development status to beta (#474)

README.md

@@ -1,7 +1,5 @@
 # Cubed
 
-**_Note: this is a proof-of-concept, and many things are incomplete or don't work._**
-
 ## Bounded-memory serverless distributed N-dimensional array processing
 
 Cubed is a distributed N-dimensional array library implemented in Python using bounded-memory serverless processing and Zarr for storage.
@@ -19,4 +17,4 @@ Cubed is a distributed N-dimensional array library implemented in Python using b
 
 [Cubed: Bounded-memory serverless array processing in xarray](https://xarray.dev/blog/cubed-xarray)
 
-[Optimizing Cubed](https://medium.com/pangeo/optimizing-cubed-7a0b8f65f5b7)
+[Optimizing Cubed](https://medium.com/pangeo/optimizing-cubed-7a0b8f65f5b7)

pyproject.toml

@@ -12,12 +12,15 @@ license = {text = "Apache License 2.0"}
 description = "Bounded-memory serverless distributed N-dimensional array processing"
 readme = {file = "README.md", content-type = "text/markdown"}
 classifiers = [
-    "Development Status :: 3 - Alpha",
+    "Development Status :: 4 - Beta",
     "License :: OSI Approved :: Apache Software License",
     "Operating System :: OS Independent",
     "Programming Language :: Python",
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
 ]
 requires-python = ">=3.9"
 dependencies = [