build: removed py35

- doesn't build and gym doesn't support that anymore.

Author: koulanurag

.github/workflows/python-package.yml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         os: [macos-latest, ubuntu-latest]
-        python-version: [3.5, 3.6, 3.7, 3.8]
+        python-version: [3.6, 3.7, 3.8]
 
     steps:
     - uses: actions/checkout@v2

setup.py

@@ -32,9 +32,8 @@
       ],
       extras_require=extras,
       tests_require=extras['test'],
-      python_requires='>=3.5',
+      python_requires='>=3.6',
       classifiers=[
-          'Programming Language :: Python :: 3.5',
           'Programming Language :: Python :: 3.6',
           'Programming Language :: Python :: 3.7',
           'Programming Language :: Python :: 3.8',