ButtR - Download and Extract Data from the 'OzButterflies' Database

Provides tools to download and extract data from the 'OzButterflies' Database <doi:10.5281/zenodo.19019034>, which contains reflectance spectra, calibrated photographs, and cytochrome c oxidase subunit I (COI) sequences of Australian butterflies. The main function get_Oz_butterflies() downloads the database and extracts selected files to a specified directory using user-defined filters.