citelens 0.1.0

• Initial release.
• Convert ‘RefWorks’ Tagged Format and ‘RIS’ exports to ‘BibTeX’ (convert_refworks(), refworks_to_xlsx()), and read ‘BibTeX’ into a data frame or ‘Excel’ file (bib_to_df()).
• Parse saved ‘Google Scholar’ results pages, or a folder of them (scholar_parse_html(), scholar_html_to_bib()), and look up missing abstracts in ‘OpenAlex’ (fetch_abstracts()).
• Text analytics on abstracts: topic modeling (topic_model() and helpers), cosine document similarity with duplicate finding and ‘Excel’ export (doc_similarity(), similarity_to_df()), and trends over time (word_trends(), topic_trends()), with charts.