new: Saving each entity from DBDiagram inside DiagramEntity
Merge pull request #11 from victorette/dev

new: Saving each entity from DBDiagram inside DiagramEntity
change: Improving unit tests
update: Improving unit tests
update: .gitignore
Merge pull request #12 from victorette/dev

Improving test coverage
Merge pull request #23 from victorette/master

Improving test coverage