On Python 3, these made the build output very hard to read (e.g., https://travis-ci.org/buildout/buildout/jobs/394026829)

On Python 3.7, these could actually break the doctests.

Closing the files should get us closer to being able to pass the tests with PyPy.

[ci skip]

[ci skip]

fix #295: temporary egg files are created as read only and can't be deleted with shutil on Windows.

[ci skip]

[ci skip]

Compare using Distribution.parsed_version to account for normalization.

'python -m zc.buildout.tests TestEasyInstall'

Fixes #451.

[ci skip]

[ci skip]

Use the new PyPI at https://pypi.org/.

[ci skip]

[ci skip]

Fix for #442 issue

`pkg_resources.SetuptoolsVersion` got deprecated in `setuptools` `v39.0.0`.
Moved on using stable and recommended `pkg_resources.parse_version`
function that does the same. For more details on the topic
see http://setuptools.readthedocs.io/en/latest/history.html#v39-0-0.

[ci skip]

[ci skip]

Correctly detect upgrade with extension that depends on setuptools

With an extension (like mr.developer) that depends on setuptools *and* with
the new update-the-workingset-immediately functionality introduced in 2.11,
the old have-we-been-upgraded-ourselves functionality didn't function reliably
anymore.

Clarify intent plus spelling/grammar fixes

Highlight names uniformly

Fix a typo, minor grammar issues

properly close resources

Fixes ``buildout.py:574: ResourceWarning: unclosed file <_io.TextIOWrapper...>```

Highlight option and folder names with backticks, in order to be uniform throughout the document.

[ci skip]

[ci skip]