Improve setup.py a bit (#328)

Author: tazend

pyproject.toml

@@ -1,9 +1,10 @@
 [build-system]
 # Minimum requirements
 requires = [
-    "setuptools==59.2.0",
-    "wheel==0.37.0",
-    "Cython>=0.29.30,<3.0",
+    "setuptools>=59.2.0",
+    "wheel>=0.37.0",
+    "Cython>=0.29.30",
+    "packaging>=21.3"
 ]
 
 

pyslurm/__version__.py

@@ -1 +1,8 @@
+# Version is in the format: SLURM_MAJOR.PYSLURM_PATCH
+#
+# The first two Numbers "X.Y" represent the current Slurm Major release that
+# this Version of PySlurm is based on.
+# The last Number "Z" is the current Pyslurm patch version, which should be
+# incremented each time a new release is made (except when migrating to a new
+# Slurm Major release, then set it back to 0)
 __version__ = "23.2.2"