New public release: OpenLoops 2.1.3 Technical updates: - Required python version: Python3 (Python2 not supported anymore) - upgrade to scons-4.5.2 - 'openloops --version' returns OpenLoops version - Fixes to support arm darwin (M1/M2/M3) machines (supported by gcc/gfortran > 10 from Homebrew) - bugfix in BLHA spin correlators - bugfix for loading loop^2 processes with BLHA interface - technical bugfix to avoid SIGFPE and other memory violations in certain situations - various other minor technical bugfixes Physics updates: - hp_mode=3 for enhanced stability in IR singular configurations - Interface for qp trees (use_qp=1) - support for pure QED and pure weak corrections. Available upon request. - support for nf=56 amplitudes (only bottom+top in loops). Available upon request. - Consistent nf=0 QCD renormalisaton available. Available upon request.