<p>Adds a YAPF-check to the Travis config.</p>

<hr>

<h4>You can view, comment on, or merge this pull request online at:</h4>
<p>  <a href='https://github.com/m-lab/mlab-observatory/pull/94'>https://github.com/m-lab/mlab-observatory/pull/94</a></p>

<h4>Commit Summary</h4>
<ul>
  <li>Fixing Python code style formatting on all files with YAPF</li>
</ul>

<h4>File Changes</h4>
<ul>
  <li>
    <strong>M</strong>
    <a href="https://github.com/m-lab/mlab-observatory/pull/94/files#diff-0">.travis.yml</a>
    (2)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/m-lab/mlab-observatory/pull/94/files#diff-1">convert_from_telescope/aggregate.py</a>
    (78)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/m-lab/mlab-observatory/pull/94/files#diff-2">convert_from_telescope/convert.py</a>
    (160)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/m-lab/mlab-observatory/pull/94/files#diff-3">convert_from_telescope/convert_from_telescope.py</a>
    (197)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/m-lab/mlab-observatory/pull/94/files#diff-4">convert_from_telescope/observatory_file_writer.py</a>
    (110)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/m-lab/mlab-observatory/pull/94/files#diff-5">convert_from_telescope/reducer.py</a>
    (34)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/m-lab/mlab-observatory/pull/94/files#diff-6">convert_from_telescope/result_grouper.py</a>
    (41)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/m-lab/mlab-observatory/pull/94/files#diff-7">convert_from_telescope/sample_checking.py</a>
    (96)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/m-lab/mlab-observatory/pull/94/files#diff-8">convert_from_telescope/site_metadata.py</a>
    (63)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/m-lab/mlab-observatory/pull/94/files#diff-9">convert_from_telescope/telescope_data_parser.py</a>
    (129)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/m-lab/mlab-observatory/pull/94/files#diff-10">convert_from_telescope/whitelister.py</a>
    (169)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/m-lab/mlab-observatory/pull/94/files#diff-11">tests/__init__.py</a>
    (1)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/m-lab/mlab-observatory/pull/94/files#diff-12">tests/test_aggregate.py</a>
    (312)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/m-lab/mlab-observatory/pull/94/files#diff-13">tests/test_convert_e2e.py</a>
    (148)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/m-lab/mlab-observatory/pull/94/files#diff-14">tests/test_grouper.py</a>
    (142)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/m-lab/mlab-observatory/pull/94/files#diff-15">tests/test_observatory_file_writer.py</a>
    (93)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/m-lab/mlab-observatory/pull/94/files#diff-16">tests/test_reducer.py</a>
    (162)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/m-lab/mlab-observatory/pull/94/files#diff-17">tests/test_sample_checking.py</a>
    (248)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/m-lab/mlab-observatory/pull/94/files#diff-18">tests/test_telescope_data_parser.py</a>
    (195)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/m-lab/mlab-observatory/pull/94/files#diff-19">tests/test_whitelister.py</a>
    (243)
  </li>
</ul>

<h4>Patch Links:</h4>
<ul>
  <li><a href='https://github.com/m-lab/mlab-observatory/pull/94.patch'>https://github.com/m-lab/mlab-observatory/pull/94.patch</a></li>
  <li><a href='https://github.com/m-lab/mlab-observatory/pull/94.diff'>https://github.com/m-lab/mlab-observatory/pull/94.diff</a></li>
</ul>

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