AtacWorks 0.2.0 release candidate 1

This is a pre-release candidate for AtacWorks v0.2.0. The main features of the pre-release include :

• Addition of end-to-end tests.
• Addition of setup scripts.
• updating documentation, linting of code.
• Ability to provide multiple input channels for training, inference.
• Introduced config files for setting up training parameters and for defining model structure.