Travis CI: Test on Python 3.9 release candidate 2

cclauss · web-flow · commit 066e816235a4 · 2020-09-26T17:00:22.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,7 +1,7 @@
 os: linux
 dist: focal
 language: python
-python: 3.8
+python: 3.9-dev
 cache: pip
 before_install: pip install --upgrade pip setuptools six
 install: pip install black flake8
