RC: CRAN 1.6.0

[IndrajeetPatil]

• Start using parametrized unit testing
• Fix vignette issues in CRAN

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 100.00%. Comparing base (cb51995) to head (6e1ee21). Report is 14 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #292 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 14 14 Lines 495 494 -1 ========================================= - Hits 495 494 -1 ```

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