travis: update encrypted PyPI credentials; use twine to upload to PyPI

Author: anthrotype

.travis.yml

@@ -1,6 +1,10 @@
-sudo: false
 language: python
 
+env:
+  global:
+    - TWINE_USERNAME="anthrotype"
+    - secure: grrVsFD+NUzbNZEv9HXhFh48VKnOWatSh4HRvO/k+DFn8iQvj1mXYXyNM7STOgX3lAxryJHpfcie1UvlE6JLPGvM8TKuq4lqtWlHCaDiNOIiaEp4EGxxhLkSz/Zf7D6501OP1hs/8kFO46QHJteOS0/SXcnIC0Fvq2hDqMb6GUoYKWGyxKwvSfT4AdVPWHEe/p2PNyWAMmJwnx1AwggnsxzDg6zAANCEAiEk7iU+gpNTgXmp+DWo/Av9hglidRjSdq8Fn0x4L+PxMxshJhIbdOB5cFS/Lq1LLBF8yqceht+hAj/pzQnIqE6ALYtXgHUxp/W0BJdJWX16m7TXm4NPWgmgRrRLR/amD+Mp5l1M9UHgwSOdQBU22CkF/hfor0b6ED4Q+Ap6ayy+g6cOp29okGLCMIjXxJU/9rIFjYQ5TFfmD2RvVhUj44e7azGyHNa9goro78mcM9on7a377guODVivVNANPTqm2ZEvLprWmLcz/dlEHFb4ODLvvh4x9hYLPZBF1A9j+qhAGuAFtmOPsPBAJzaSEDAu3DWtwYeGh1+RqagoNhLovB/qfz4YbFygWTj7oQfvmnE0wkAFGqR5EbgLl6o4FKvXl5ZpDj8q/gZdCjwi4VLSTguk0xlIfObLhKq73issjB3Jaxi4Pnl5KcnnhhgtvY3WGx27jMP2yB0=
+
 matrix:
   include:
     - python: 2.7
@@ -9,7 +13,6 @@ matrix:
       # required to run python3.7 on Travis CI
       # https://github.com/travis-ci/travis-ci/issues/9815
       dist: xenial
-      sudo: true
 
 install:
   - pip install --upgrade pip setuptools wheel
@@ -22,8 +25,15 @@ install:
 
 script: tox
 
-before_deploy:
-  - python setup.py sdist bdist_wheel
+after_success:
+  # if it's a tagged commit, upload distribution packages to PyPI
+  - |
+    if [ -n "$TRAVIS_TAG" ] && [ "$TRAVIS_REPO_SLUG" == "typemytype/booleanOperations" ] && [ "$TRAVIS_PYTHON_VERSION" == "3.6" ]; then
+        pip install --upgrade twine pip setuptools wheel
+        python setup.py sdist
+        pip wheel --no-deps --wheel-dir dist .
+        twine upload dist/*.whl dist/*.zip
+    fi
 
 deploy:
   # deploy to Github Releases on tags
@@ -38,15 +48,3 @@ deploy:
       tags: true
       all_branches: true
       python: 3.6
-  # deploy to PyPI on tags
-  - provider: pypi
-    server: https://upload.pypi.org/legacy/
-    on:
-      repo: typemytype/booleanOperations
-      tags: true
-      all_branches: true
-      python: 3.6
-    user: anthrotype
-    password:
-      secure: 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
-    distributions: sdist bdist_wheel