Add tests (#37)

* Add test workflow

* Add test directory

* Alpha test for Container

* Bump version to 1.1.0

* Add Container test

* Update docstring on container.py

* Update docstring on block.py

* Add default precision to Block.compute_xx()

* Update Block.compute_pca

* Prevents ZeroDivisionError on Block

* Add Block test

* Update the return value of ImageObject.is_valid()

Update README.md to refer the default value of Configuration to confi…

…guration.py

Bump to version 1.0.8

- Update license for pypi
- Trivial refactor

Bump version 1.0.7. `copy_move.detect_and_export()` now returns the `…

…fraud_list`

bump version to 1.0.6 and add default output path for `copy_move.dete…

…ct_and_export()`

bump version to 1.0.5