Release 0.12.5

Release 0.12.4

Release 0.12.3

Release 0.12.2

Release 0.12.1

Release 0.12

Add configuration for readthedocs

MAINT simplify setup.py

The release instructions were not working with Python 3 because
sphinx_pypi_upload.py was not Python 3 compatible. It has been replaced
by setup.py upload_docs since.

Bump up __version__

Release 0.10.0