when update from 0.1.48 to 0.1.50, it remove the `v3` feature, it is a break change, it shouldn't exist because 0.1.50 should be compatible with 0.1.48
when update from 0.1.48 to 0.1.50, it remove the
v3feature, it is a break change, it shouldn't exist because 0.1.50 should be compatible with 0.1.48