update setup.py and readme

Author: FabianHofmann

doc/release_notes.rst

@@ -6,6 +6,8 @@ Upcoming Release
 
 * Using the python `sum()` function over `ScalarVariable`s and `ScalarLinearExpression`s is now supported.
 * Returning None type in `from_rule` assignment is now supported.
+* Python 3.11 is now supported
+* Xarray versions higher and lower `v2022.06.` are now supported.
 
 Version 0.0.14
 --------------

setup.py

@@ -25,14 +25,14 @@
     license="GPLv3",
     packages=find_packages(exclude=["doc", "test"]),
     include_package_data=True,
-    python_requires="~=3.7",
+    python_requires="~=3.8",
     install_requires=[
         "numpy",
         "scipy",
         "bottleneck",
         "toolz",
         "numexpr",
-        "xarray<=2022.03.",
+        "xarray!=2022.06.",
         "dask>=0.18.0",
         "tqdm",
         "deprecation",