Update pyproject.toml with new keywords and classifiers

pyproject.toml

@@ -7,7 +7,17 @@ name = "fastnanquantile"
 dynamic = ["version"]
 readme = "README.md"
 description = "A package for fast nanquantile calculation"
-keywords = ["numpy", "bottleneck", "xarray"]
+keywords = ["GIS", "numpy", "bottleneck", "xarray"]
+classifiers = [
+  "Intended Audience :: Science/Research",
+  "Intended Audience :: Developers",
+  "License :: OSI Approved :: MIT License",
+  "Programming Language :: Python :: 3.8",
+  "Programming Language :: Python :: 3.9",
+  "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
+]
+license = {text = "MIT License"}
 requires-python = ">=3.8"
 dependencies = [
     "numba",
@@ -23,7 +33,7 @@ where = ["src"]  # list of folders that contain the packages (["."] by default)
 include = ["*"]  # package names should match these glob patterns (["*"] by default)
 #exclude = []  # exclude packages matching these glob patterns (empty by default)
 
-[tool.setuptools_scm]
+[tool.setuptools_scm]  # Automatically set the version number based on git tags
 
 [tool.black]
 line-length = 100