Switch to a full .travis.yml

.travis.yml

@@ -1,3 +1,34 @@
-version: ~> 1.0
+# Copied from:
+# https://github.com/zopefoundation/meta/tree/master/config/pure-python
 language: python
-import: zopefoundation/meta:travis-ci-config/minimal.yml
+python:
+  - 2.7
+  - pypy
+  - 3.5
+  - 3.6
+  - 3.7
+  - 3.8
+  - pypy3
+
+matrix:
+  include:
+    - name: "lint"
+      python: 3.7
+      env: TOXENV="lint"
+    - name: "coverage"
+      python: 3.7
+      env: TOXENV="coverage"
+      after_success:
+        - coveralls
+
+install:
+  - pip install -U pip
+  - pip install -U tox-travis coveralls
+
+script:
+  - tox
+
+notifications:
+  email: false
+
+cache: pip