Activate caching in travis again

Cito · Cito · commit d481048f45e6 · 2020-05-12T22:40:55.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -22,7 +22,10 @@ matrix:
 install: pip install coveralls tox
 script: tox
 after_success: coveralls
-
+cache:
+  directories:
+    - $HOME/.cache/pip
+    - $HOME/.cache/pre-commit
 deploy:
   provider: pypi
   distributions: "sdist bdist_wheel"
