Ignore editor files.

There's no reason folk would ever want to commit these.

Change-Id: I1ec0757280ef15e3ba3cf003c6cca1eda40f6e53
doc: disable intersphinx mapping

The intersphinx extensions let one reserve a link namespace and map it
to a remote URL, for example to refer to the Python documentation. A
drawback is that, from time to time, Sphinx will attempt to download an
object inventory from the remote, that is not convenient when running
sphinx in offline mode such as in a plane.

I am assuming most projects will not link to upstream Python
documentation and hence it is safe to remove the intersphinx extension.
The lines are left commented to let one easily reenable the feature
whenever they have a use case of it.

Change-Id: Idef8e88545715a3f1cb9ace002960a7ad3e37b69
Actually git add the __init__.py file

Change-Id: I326aab400f32e2e7a006a68eb5cdf3e7a40d995c
Merge "Ignore editor files."
Merge "Actually git add the __init__.py file"
Add missing HACKING.rst

Change-Id: I670e68ab0dcd33b83f58b97097fdce91f66ae59e
Add reasons to ignore certain flake8 checks

Change-Id: I4d1788d8d58b0c60d8ab5ded392f4161f439c7b5
Merge "Add reasons to ignore certain flake8 checks"