Common ORM library fully functional.

src/common/orm/Database.py

src/common/orm/Exceptions.py

src/common/orm/backend/_Backend.py

src/common/orm/backend/inmemory/InMemoryBackend.py

src/common/orm/backend/inmemory/Tools.py

src/common/orm/backend/redis/RedisBackend.py

src/common/orm/fields/BooleanField.py

src/common/orm/fields/Field.py

src/common/orm/fields/FloatField.py

src/common/orm/fields/ForeignKeyField.py

src/common/orm/fields/IntegerField.py

src/common/orm/fields/PrimaryKeyField.py

src/common/orm/fields/StringField.py

src/common/orm/model/Model.py

src/common/orm/tests/test_unitary_orm.py

src/common/type_checkers/Checkers.py