🎨 review dependencies and package metadata

setup.py

@@ -45,7 +45,6 @@
 examples_require = [
     'matplotlib>=3.1',
     'numpy>=1.18',
-    'geopandas>=0.12'
 ]
 
 extras_require = {
@@ -63,6 +62,7 @@
 
 install_requires = [
     'Click>=7.0',
+    'geopandas>=0.12',
     'jsonschema>=3.2',
     'requests>=2.20',
     'Jinja2>=2.10',
@@ -106,9 +106,13 @@
         'Environment :: Web Environment',
         'Intended Audience :: Education',
         'Intended Audience :: Science/Research',
-        'License :: OSI Approved :: GPL v3 License',
+        'License :: OSI Approved :: GNU General Public License v3 (GPLv3)',
         'Operating System :: OS Independent',
         'Programming Language :: Python :: 3.7',
+        'Programming Language :: Python :: 3.8',
+        'Programming Language :: Python :: 3.9',
+        'Programming Language :: Python :: 3.10',
+        'Programming Language :: Python :: 3.11',
         'Topic :: Software Development :: Libraries :: Python Modules',
         'Topic :: Scientific/Engineering :: GIS',
     ],