added numpy requirement to setup.py

Author: Gabriel

hilbertcurve/__init__.py

@@ -1,4 +1,4 @@
 """Metadata for this package."""
 
 __package_name__ = "hilbertcurve"
-__version__ = "2.0.2"
+__version__ = "2.0.3"

setup.py

@@ -52,7 +52,9 @@ def find_long_description() -> str:
     author_email="gabriel.altay@gmail.com",
     license="MIT",
     packages=find_packages(exclude=["tests*"]),
-    install_requires=[],
+    install_requires=[
+        "numpy",
+    ],
     extras_require={
         "dev": ["sphinx", "sphinx_rtd_theme", "sphinx_autodoc_typehints", "pytest"]
     },