Twined

Major upgrade and improvements to documentation and twine structure.

Documentation was updated to allow for a slightly clearer twine structure (improved key names and a reconciled approach to treatment of files/values for inputs/configuration).

Comprehensive validation of credentials, children and manifests was added, as well as various helper methods and properties based on need in the octue-sdk-python library (which has a number of thorough use cases for the Twine class.

Examples were also added, for use as demonstrators in a development project.

Major upgrade and improvements to documentation have been made. Whilst doing so, the documentation was updated to allow for a slightly clearer twine structure (improved key names and a reconciled approach to treatment of files/values for inputs/configuration).

Neither twined nor the dependent octue-sdk library are up to date with these proposed changes yet, this alpha release allows review of the latest documentation and thinking about the twine spec.

Examples were also added, for use as demonstrators in a development project.

Minor release just to add a pypi badge so users can navigate to the installable repo from GitHub.

Basic validation now undertaken for all strands:
- Added credential parser and checker
- Added children parser and checker
- Added manifests parser and checker (very basic)

Updated schema for manifests:
- kind now enumerated with the only option that currently makes sense, and default provided to remove the pain

Improved error logging:
- validation errors now contain a printout of what the error is. Helpful!

New features:
- Added validation for schema-based strands (significant WIP against 7 and 11)
- Added unit tests to close 6 - coverage now at 100%

Improvements:
- Refactored twine validation to use the same internal methods as data validation (reduced, more elegant code)
- Implemented automatic code style application on pre-commit hook

Documentation:
- Added developer installation guide to the README
- Added release process guide reminder to the README