pakret can now write references in multiple .bib files within the same document (#26).

Fixed an issue with pkrt_set(bib =) that may lead to the replication or deletion of some bib entries in the newly defined .bib file in some edge cases (#22).

pakret now can cite references that have a pre-written key (#18).

Fixed alphabetical ordering of package names in as.data.frame.pkrt_list() (#19).

Added book as a second BibTeX type that should be used in priority when getting the reference of a package (previously, the priority was given to manual entries only). This allows for a slightly better handling of multi-reference packages by using a more general reference when there's a book but no manual BibTeX entry available (#15).

as.data.frame.pkrt_list() now arranges packages in alphabetical order (#13).