* Flesh out SendinBlue docs, add a readme mention
* Stop trying to list all the supported ESPs in the project short
description and similar headlines -- it was becoming unwieldy.
* Support `pip install django-anymail[sendinblue]`
and use it in Travis tests (for consistency; SendinBlue
doesn't require any extra packages)
* Remove "pre-1.0" warnings in docs, readme
* Jump trove classifer from pre-alpha all the way up to stable
(arguably this should have been "beta" for the past several months)
* Don't maintain similar overview in README.rst and docs/index.rst -- instead just include relevant portions of readme in the docs
* Patch up README version numbers and doc links in setup.py long_description to freeze them to the version being setup
* Suppress the Travis build status indicator in the docs and PyPI, since it can't be frozen to the specific version in question