implicitMeasures 1.0.0

• Added support for computing multiple IAT D-scores through multi_dscore().
• Added support for computing D-scores for multiple SC-IATs through multi_dscore().
• Improved input validation and handling of IAT and SC-IAT data.
• Updated the package documentation and vignettes.
• Added unit tests for the main data-cleaning and scoring functions.
• Fixed minor bugs and inconsistencies.