restrict NumPy version

Author: fandreuz

setup.py

@@ -13,7 +13,7 @@
 VERSION = meta["__version__"]
 KEYWORDS = "dynamic-mode-decomposition dmd"
 
-REQUIRED = ["numpy", "scipy", "matplotlib", "scikit-learn"]
+REQUIRED = ["numpy<2", "scipy", "matplotlib", "scikit-learn"]
 
 EXTRAS = {
     "docs": ["Sphinx>=1.4", "sphinx_rtd_theme"],