Added support for tuples in option checking. Fixes #3303

[aryan1165]

Description

Earlier:

Earlier "particle size" was not treated as a tuple and this caused problem as explained in Issue #3303.

Now:

Now, there is added compatibility for "particle size" to be either a tuple or a single value.

Fixes #3303

• New feature (non-breaking change which adds functionality)
• Optimization (back-end change that speeds up the code)
• Bug fix (non-breaking change which fixes an issue)

Key checklist:

• No style issues: $ pre-commit run (or $ nox -s pre-commit) (see CONTRIBUTING.md for how to set this up to run automatically when committing locally, in just two lines of code)
• All tests pass: $ python run-tests.py --all (or $ nox -s tests)
• The documentation builds: $ python run-tests.py --doctest (or $ nox -s doctests)

[kratman]

This seems to be the same as PR #3342