v4.0.0

• structurizr-dsl: Fixes #374 (!identifiers hierarchical isn't propagated when extending a workspace).
• structurizr-dsl: Adds the ability to use the group keyword inside a component definition, to set the group name of that component.
• structurizr-dsl: Adds the ability to use the group keyword inside the component finder strategy forEach block.
• structurizr-dsl: Adds a reluctant version of include * (include *?) for system context views that only adds relationships to/from the scoped software system.
• structurizr-dsl: Adds a reluctant version of include * (include *?) for container views that only adds relationships to/from the containers in the scoped software system.
• structurizr-dsl: Adds a reluctant version of include * (include *?) for component views that only adds relationships to/from the components in the scoped container.
• structurizr-dsl: Removes deprecated !ref and !extend keywords.
• structurizr-dsl: Adds support for Java style """ multi-line text blocks.
• structurizr-dsl: Adds support for defining element and relationship archetypes.