Adds unittests for individuals, families, life events, sources and notes
Adds unittests for Place objects
Adds unittests for FamilyTree object.
Begins unittests for SQLiteConnector
Fixes left behind connections to other objects after removal of individuals and families
Patches SQLiteConnector.insert_all method
Patches SQLiteConnector.load_all method
Patches SQLiteConnector.load_all method again
Finalizes unittests
Cleans tests
Adds docstrings
Refactors IndividualName class
Fixes IndividualName.format method
Updates class diagram
Updates README