Add a TODO comment for updating halide_trace_event to use halide_type_t.
Add a TODO comment for updating halide_trace_event to use halide_type_t.

psuriana/Halide,dougkwan/Halide,tdenniston/Halide,dougkwan/Halide,jiawen/Halide,tdenniston/Halide,tdenniston/Halide,psuriana/Halide,adasworks/Halide,psuriana/Halide,kgnk/Halide,dougkwan/Halide,psuriana/Halide,dougkwan/Halide,jiawen/Halide,tdenniston/Halide,tdenniston/Halide,adasworks/Halide,jiawen/Halide,adasworks/Halide,dougkwan/Halide,jiawen/Halide,jiawen/Halide,ronen/Halide,ronen/Halide,dougkwan/Halide,ronen/Halide,psuriana/Halide,ronen/Halide,kgnk/Halide,kgnk/Halide,tdenniston/Halide,tdenniston/Halide,kgnk/Halide,psuriana/Halide,kgnk/Halide,dougkwan/Halide,kgnk/Halide,adasworks/Halide,psuriana/Halide,adasworks/Halide,tdenniston/Halide,jiawen/Halide,adasworks/Halide,ronen/Halide,jiawen/Halide,adasworks/Halide,ronen/Halide,adasworks/Halide,ronen/Halide,kgnk/Halide,kgnk/Halide,ronen/Halide,dougkwan/Halide