mass update feather_hat -> hat_feather
create alias feathered_cap (18) -> hat_feather (809)
create alias feathered_hat (113) -> hat_feather (809)
create implication feathered_headdress (136) -> headdress (4024)
create implication headdress (4024) -> headwear (212757)
create implication tricorne (105) -> hat (198156)
create implication bicorne (39) -> hat (198156)
remove implication hat_feather (809) -> headwear (212757)
create implication hat_feather (809) -> hat (198156)