Version 0.12.0 in pip is incorrect

The library that is installed from pip does not seem to contain the correct code from the 0.12.0 release. At least when I installed it, the `_build_get_range_request` function did not set the limit and so all my queries were failing because the response was too large.

Once I cloned the repo and ran python3 setup.py install from the source code, things started working as expected.

Start by inspecting setup.py and the packaged 0.12.0 contents, then compare them with the cloned source around _build_get_range_request. Reproduce the pip installation and verify whether the published package differs from the repository version; done means pip users receive code that sets the request limit and their queries no longer fail due to oversized responses.

Written by the indexing model from the issue text.