New developments in PySDM and PySDM-examples v2: collisional breakup, immersion freezing, dry aerosol initialization, and adaptive time-stepping. - Emily K. de Jong; Clare E. Singer; Sajjad Azimi; Piotr Bartman; Oleksii Bulenok; Kacper Derlatka; Isabella Dula; Anna Jaruga; J. Ben Mackay; Ryan X. Ward; Sylwester Arabas (J. Open Source Softw., 2023)