Update to python 3.9
tree43e9968d079be9b6e1354dc64ecc1133faa0a498
-rw-r--r-- 88 .gitignore
-rw-r--r-- 7336 .travis.yml
-rw-r--r-- 7651 LICENSE
-rw-r--r-- 415 README.md
-rwxr-xr-x 1853 cache_fallback_directories.py
-rwxr-xr-x 1977 cache_manual.py
drwxr-xr-x - docs
-rw-r--r-- 43 requirements.txt
-rwxr-xr-x 14855 run_tests.py
-rw-r--r-- 5762 setup.py
drwxr-xr-x - stem
drwxr-xr-x - test
-rwxr-xr-x 199 tor-prompt
-rw-r--r-- 242 tox.ini