Remove all Travis-CI cruft.

.travis.yml

@@ -1,33 +0,0 @@
-language: python
-matrix:
-  include:
-  - python: 2.7
-    env: TOXENV=py27
-  - python: 3.4
-    env: TOXENV=py34
-  - python: 3.5
-    env: TOXENV=py35
-  - python: 3.6
-    env: TOXENV=py36
-  - python: 3.7
-    env: TOXENV=py37
-    dist: xenial # required for Python >= 3.7
-  - python: pypy
-    env: TOXENV=pypy
-  - python: pypy3
-    env: TOXENV=pypy3
-install: pip install tox coveralls && tox --notest
-script: tox
-after_success: coveralls
-deploy:
-  provider: pypi
-  user: jazzband
-  server: https://jazzband.co/projects/contextlib2/upload
-  distributions: sdist bdist_wheel
-  password:
-    secure: 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
-
-  on:
-    tags: true
-    repo: jazzband/contextlib2
-    condition: "$TOXENV = py35" # only release once per test run for a Git tag

README.rst

@@ -36,12 +36,12 @@ You can test against multiple versions of Python with
     pip install tox
     tox
 
-Versions currently tested in both tox and Travis CI are:
+Versions currently tested in both tox and GitHub Actions are:
 
 * CPython 2.7
-* CPython 3.4
 * CPython 3.5
 * CPython 3.6
 * CPython 3.7
+* CPython 3.8
 * PyPy
 * PyPy3