Adding default behaviour for clips array when input shape isn't adequate

[EmreCenk]

This PR Includes:

• Implemented changes for clips_array default behaviour. Previously when a non-rectangular array was passed in ( ex: [ [1, 2], [3] ] ), it would throw an error. Now, the remaining space is just filled with the background color as default behaviour instead

Checklist:

• I have provided code that clearly demonstrates the bug and that only works correctly when applying this fix
• I have added suitable tests demonstrating a fixed bug or new/changed feature to the test suite in tests/
• I have properly documented new or changed features in the documentation or in the docstrings
• I have properly explained unusual or unexpected code in the comments around it

[mgaitan]

@EmreCenk thank you very much for this first contribution. Please, consider fixing the broken tests and add at least one showing the case you are fixing with this change. Also, could you use a spellchecker in the docstring and comments?

thanks!