Import clean.
Merge branch 'import' into develop
Bumped to v1.0.0
EhnDigest, EhnHeaderDigest, PostbackDigest.

Simplified API with e.g. eccepting dictionary and not just name-value coll.
Merge branch 'digest-changes' into develop
As we will change the sub URLs, provide onle the root URL for docs for now.
PostbackDigest and EhnDigest now offers Validate and TryValidate.
Merge branch 'digests-validate' into develop
Removed smart line item constructor.
Merge branch 'develop'
Fixed URLs for release.
Merge branch 'develop'