Update travis configuration

.travis.yml

@@ -1,42 +1,32 @@
----
 sudo: required
 services:
-  - docker
-
+- docker
 language: python
-
 python:
-  - "3.5"
-  - "3.6"
-  - "3.7"
-  - "3.8"
-
+- '3.5'
+- '3.6'
+- '3.7'
+- '3.8'
 before_install:
-  - docker --version
-  - docker-compose --version
-
+- docker --version
+- docker-compose --version
 install:
-  - pip install --upgrade pip setuptools
-
+- pip install --upgrade pip setuptools
 before_script:
-  # Pre-cache images to prevent timeout in service availability checks
-  - docker-compose -f tests/docker-compose.yml pull
-  - docker-compose -f tests/docker-compose.yml build
-
+- docker-compose -f tests/docker-compose.yml pull
+- docker-compose -f tests/docker-compose.yml build
 script:
-  - python setup.py test
-
+- python setup.py test
 after_script:
-  - docker-compose -f tests/docker-compose.yml down
-
+- docker-compose -f tests/docker-compose.yml down
 deploy:
   provider: pypi
   on:
     tags: true
     branch: master
-  distributions: "sdist bdist_wheel"
+  distributions: sdist bdist_wheel
   skip_existing: true
   skip_cleanup: true
   user: __token__
   password:
-    secure: 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
+    secure: bM4aTCjIoaU+vOn2cazrqbgFfSjNAgXvi3JiYTr03mi1/PV2EFqKnu7oyVvQCJTGE7/fsbnyH+CcQMgqmw4xViSqegtPw6I0banjPj9vQ0E/SKpUnpb/1mIlbp9tKBCZy+zMpVLbTsABxgwLT+AJqVTCRI54Lspzv4cqhZBYQNzDaCk2kzv1Ewxb1w3EP6mXCZ72VW+0MRHGHceVhTsFdqHlVVEQd48sXgdkt1B8aG0y17cKNBK2XFC/YiEdplzTpwNddRCdSpgrY5ty66fCh7kuy0cwUeGL/U+L5AwM3qdnHD5+QnJA2fj8i6EO70/1PMgstbFtTOFJoODDYTXHxQukqdal0fr47FBS4pulSslUjfrX18gn6E67FkPZ+nYY97d+kpkCBdnMSlBCU6qUhbmIfCrHE12ho1ALKvr8C6jCoLdVI6LLt8YSGIJNe62CqrvHml7EI3IATT7qDQDH52HClZITpLO/e0UQ9J3JlvkNNs/kPkkjQVq/pq/z2Qrvc9miq0NOvJ7lXatqoct+0QHlgQ0XfM0NIw7NVQbi8w/m0BA1cVC3zly6a1O3Apd4CkVrdKm2A+/w7j6sDywBDxUf3g613CrdnvUvLxl3XfEY1CBUv9NzBLh5PukIN+vSEBgUNoLJT/P/GeE0iypkAuHFRxlBcvNpCdIoKhchX+I=