better_contact_manifold conditional_compilation contact_manifold_and_tracking master optimizations proximity_inside_trimesh send_sync sph triangle_rish_projection v0.17-fixes

v0.20.1 v0.20.0 v0.19.2 v0.19.1 v0.19.0 v0.18.4 v0.18.3 v0.18.2 v0.18.1 v0.18 v0.17.2 v0.17.1 v0.17.0 v0.16.2 v0.16.1 v0.16.0 v0.15.4 v0.15.3 v0.15.2 v0.15.1 v0.14.1 v0.14.0 v0.13.0 v0.12.0 v0.11.0 v0.10.0 v0.9.0 v0.8.0