Use Travis to upload to Github releases

See gh-10342

.travis.yml

@@ -1,26 +1,44 b''
 # http://travis-ci.org/#!/ipython/ipython
 language: python
 python:
     - "nightly"
     - 3.6
     - 3.5
     - 3.4
     - 3.3
 sudo: false
 before_install:
     - git clone --quiet --depth 1 https://github.com/minrk/travis-wheels travis-wheels
     - 'if [[ $GROUP != js* ]]; then COVERAGE=""; fi'
 install:
     - pip install "setuptools>=18.5" pip --upgrade
     - pip install -f travis-wheels/wheelhouse -e file://$PWD#egg=ipython[test] --upgrade
     - pip install codecov --upgrade
 script:
     - cd /tmp && iptest --coverage xml && cd -
 after_success:
     - cp /tmp/ipy_coverage.xml ./
     - cp /tmp/.coverage ./
     - codecov
 
 matrix:
     allow_failures:
         - python: nightly
+
+before_deploy:
+    - rm -rf dist/
+    - python setup.py sdist
+    - python setup.py bdist_wheel
+
+deploy:
+    provider: releases
+    api_key:
+        secure: Y/Ae9tYs5aoBU8bDjN2YrwGG6tCbezj/h3Lcmtx8HQavSbBgXnhnZVRb2snOKD7auqnqjfT/7QMm4ZyKvaOEgyggGktKqEKYHC8KOZ7yp8I5/UMDtk6j9TnXpSqqBxPiud4MDV76SfRYEQiaDoG4tGGvSfPJ9KcNjKrNvSyyxns=
+    file: dist/*
+    file_glob: true
+    skip_cleanup: true
+    on:
+        repo: ipython/ipython
+        all_branches: true  # Backports are released from e.g. 5.x branch
+        tags: true
+        python: 3.6  # Any version should work, but we only need one