Fix typo in JMES utils

Add retries to stages

Fix 'anything' token in included test stages

Fix formatting environment variables in command line global config files

Add content type/encoding to uploaded files

Add 'timeout' parameter for http requests

Bump version: 0.17.2 → 0.18.0

Stop wrapping responses/schemas in files for verification

Dummy tag to attempt to make travis dpeloy, again

Add support for putting stages in included files which can be referre…

…d to by an id - see 57f2a10 for details