contentanalysis 1.1.0

• New classify_rhetorical_moves() function: classifies rhetorical moves at the sentence level in scientific text, based on Swales' CARS model and extensions for Literature Review and Discussion/Conclusion sections. Uses a hybrid rule-based approach, optionally enhanced with Google Gemini LLM classification
• analyze_scientific_content() gains rhetorical_moves and rhetorical_model arguments to optionally include rhetorical move classification in the analysis output
• Improved PDF import: better handling of multi-column layouts and automatic removal of running headers and first-page headers/footers
• Improved reference parsing with format-aware detection (parenthetical, bare-year, and numbered styles) and CrossRef enrichment of references extracted from the PDF
• Fixed R CMD check portability NOTE by replacing non-ASCII characters in R/pdf_import.R with Unicode escapes
• Fixed R CMD check NOTE about non-standard top-level files by adding test_rhetorical_moves.R, tasks, and revdep to .Rbuildignore