[ent geo world] Check if Biped can stand using query instead of sensor
[ent] Prevent Flyer from getting stuck on walls
[ent] Give Flyer recoil when it fires
[ent world] Halve Flyer's mass
[ent geo] Add space::query(Rect...)
[geo world] Try new vision system
[geo shell world] Fix some issues with new vision walls
[geo vis] Add draw_arc
[geo world] Exchange push_curve for repel_point
[geo] Fix some Wall glitches
[geo world] Fix some more Wall glitches
Compile with -Wno-unused-label
Add fix_touchpad command
[util] Improve accuracy of intersect(Circle, Line)
[shell] Use local_config.hacc