v0.1.9
- Add rule-based Urdu Stemmer module (\stemUrdu, \stemUrduText, \getAffixes).
- Add morphological restorations for feminine plurals (لڑکیاں → لڑکی), hamza plurals (دعاؤں → دعا), and Arabic/sound plurals (تعلیمات → تعلیم).
- Add canonical prefix and suffix stripping with short root protection and exception handling.
- Add canonical constants \URDU_PREFIXES\ and \URDU_SUFFIXES.