GR-NLP-TOOLKIT: An Open-Source NLP Toolkit for Modern Greek. - Lefteris Loukas; Nikolaos Smyrnioudis; Chrysa Dikonomaki; Spyros Barbakos; Anastasios Toumazatos; John Koutsikakis; Manolis Kyriakakis; Mary Georgiou; Stavros Vassos; John Pavlopoulos; Ion Androutsopoulos (COLING (Demonstrations), 2025)