Add engine for new Events shape

Create Droid provider as an example for alternate back end

Add native droid model for vcons testing

Merge pull request #9 from scitt-community/jag-uk/2/strutcured-types

Add type hints for Sign1Statement changes

Reduce excessive 'with' scoping.

Convert input to Register Signed Statement to pycose structured type

Merge pull request #8 from scitt-community/jag-uk/5/refactor-tests

Merge pull request #7 from scitt-community/jag-uk/6/fix-wheel-machinery

Refactor tests to their own space.

Fix typo in dependency

Merge pull request #1 from scitt-community/steve/governance

Merge branch 'main' into steve/governance

Add a DataTrails back end and simple test for it

Update repo reference

Add baseline governance

Initial commit