MAINT: Update maintainer and url metadata

Author: Kai-Striega

setup.py

@@ -52,10 +52,14 @@ def get_version():
           long_description_content_type='text/markdown',
           packages=find_packages(exclude=['doc']),
           author='Travis E. Oliphant et al.',
-          license='BSD',
+          license='BSD 3-Clause',
+          maintainer='Numpy Financial Developers',
+          maintainer_email='[email protected]',
           install_requires=['numpy>=1.15'],
           python_requires='>=3.5',
           classifiers=CLASSIFIERS.splitlines(),
+          url='https://numpy.org/numpy-financial/',
+          download_url='https://pypi.org/project/numpy-financial/',
           project_urls={
               "Bug Tracker": "https://github.com/numpy/numpy-financial/issues",
               "Documentation": "https://numpy.org/numpy-financial/",