Changes

Update Readme with new features etc...
Fix typos in examples causing it to not fully work
Add support for scripts running on local host, as well as host base foreground components
Set a default empty hash for 'path' key, and a default location for devlab_up.env file
Update Readme with the last_modified label feature for runtime images
Add support for installer to point to a local directory for devlab packages
Update build script to also remove any bytecode files
Move global-status and update actions to module. Update build script to bundle the module
Move down, reset, restart, shell, status, and up actions to module. Misc bug fixes for example project
Split helpers module out, and move the build action to the new actions submodule
Create devlab_bench python module and break out docker helper, exceptions, and initial core helpers into it
Fix base images pathing for cases where the docker_file path gets updates in the dict to be fully pathed
Update README.md to include the recent yaml support changes
Fix image parsing some more, to account for docker hub images with a numberic tags

Provide feedback