* Deprecate `load_env` in favor of `env_prefix`
`load_env` both enabled/disabled environment variable parsing, while
also letting the user modify the env prefix. Deprecate the ability to
disable environment parsing, and add a new config variable to track the
user's desired prefix for environment-based configuration.
Resolves: #2102
* Add a few common .gitignore patterns
* assign app before handle_request so that request.app could be used in case of connection timeout
* gitignore pip-wheel-metadata/
* remove default app for request class and fix lint issue
This commit creates configuration files and an index page for
documentation using Sphinx. The recommonmark package is used to enable
Markdown support for Sphinx, using the Common Mark specification. This
means that the current documentation doesn't need to be rewritten.
