Initial CRAN submission.
swe_get_doc(): fetch a single Swedish statute (SFS) by number, with
consolidated up-to-date text, metadata, and repealed-statute detectionswe_search(): relevance-ranked free-text search over SFS, with date
range, department, and session-year filtersswe_get_text(), swe_get_metadata(): thin wrappers around
swe_get_doc() for text-only or metadata-only accessswe_is_repealed(): convenience wrapper to check repeal status