Fixed coding style to conform to PEP8
Implemented project variables
Added a message formatter/logger to generate similar looking output
Added message formatter tests
Added string interpolator for project variables
  The interpolator will replace all {{variable_name}} with whatever the value of "variable_name" in the environment dictionary is
Removed lib/ from .gitignore
Fixed mocca shell launcher to always use python3
Added --interpolate flag to dump argument parser to allow switching on variable interpolation when dumping
Added add-var command
Added --verbosity flag for primary argument parser to set the message formatter's/logger's verbosity level
Added constants for terminal colors
Dependency actor now respects absolute paths in dependency configuration
Added README
Added license