Fix undefined behavior in Union: Ensure that non-array values can be passed as arguments without issues.
Fix throttling behavior in Throttle: Correct the implementation to handle leading calls properly, ensuring expected behavior when leading is set to false.
Fix duplicate function in Unzip: Remove the outdated duplicate unzip function and update documentation to favor the correct usage of _.zip.apply.
Others
Update documentation: Correct the outdated comment describing the _.unzip function for better clarity.
Remove erroneous version reference: Clean up the repository by removing an incorrect version reference from the history.