* Some adaptations for better integration with the awesome Zotero Cita plugin: https://github.com/diegodlh/zotero-cita.
* Slightly changed linkToShareAppendix() logic.
* Added downloadFile function.
! Fixed physics of Co-authorship network by reverting to default barnesHut configuration.
! Fix title of edges in Co-authorship network (only considers seed articles as of 1.21).
! Fixed some old terminology in comments.