Switch to jobs matrix and add deploy stage

.travis.yml

@@ -1,17 +1,28 @@
 dist: xenial
 language: python
 
-matrix:
-  fast_finish: true
-  include:
-    - python: "3.6"
-    - python: "3.7"
-    - python: "3.8"
-
 install:
   - pip install -e .
   - pip install pytest pytest-cov codecov
 
 script: pytest opsdroid_homeassistant --cov --cov-report term
 
 after_success: codecov
+
+jobs:
+  fast_finish: true
+  include:
+    - python: "3.6"
+    - python: "3.7"
+    - python: "3.8"
+    - stage: deploy
+      script: skip     # usually you do not want to rerun any tests
+      python: "3.7"
+      deploy:
+        provider: pypi
+        user: $PYPI_USER
+        password: $PYPI_PASSWORD
+        skip_cleanup: true
+        on:
+          tags: true
+          repo: opsdroid/opsdroid-homeassistant