Remove python 3.5 support

Author: lukasmasuch

setup.py

@@ -102,7 +102,6 @@ def load_requirements(path_dir=PWD, file_name="requirements.txt", comment_char="
         "Natural Language :: English",
         "Operating System :: OS Independent",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",