Vent

improvements:
- upgraded version of rq
- upgraded version of sphinx
- upgraded version of elasticsearch
- upgraded version of pika
- upgraded version of pytest

improvements:
- upgraded version of docker
- upgraded version of pika
- upgraded version of pytest
- upgraded version of sphinx
- upgraded version of watchdog

bug fixes:
- fixed an issue where overriding the docker command for rq_worker was failing

improvements:
- upgraded version of pyyaml
- upgraded version of docker
- upgraded version of pytest
- upgraded version of redis

improvements:
- major rewrite reducing number of lines of code
- removed Docker binary from images
- moved non-critical tools to extras directory
- without a startup file, vent will not auto install/build/start core tools

bug fixes:
- removed shell outs to Docker
- fixed checkout of different branches where locations have changed
- fixed same name tools in different directories
- instances in template files now take effect
- fixed issue where template and startup files might disagree on number of instances

improvements:
- upgraded to alpine 3.9
- upgraded elasticsearch to 6.6.0
- upgraded version of pytest
- upgraded version of redis

improvements:
- upgraded version of redis
- upgraded to latest version of pip
- upgraded version of pytest
- upgraded version of sphinx

bug fixes:
- docker was accidentally removed, it has been readded correctly