mass update feather_hat -> hat_feather
create alias feathered_cap (25) -> hat_feather (1306)
create alias feathered_hat (1) -> hat_feather (1306)
create implication feathered_headdress (174) -> headdress (4701)
create implication headdress (4701) -> headwear (271661)
create implication tricorne (173) -> hat (249138)
create implication bicorne (67) -> hat (249138)
remove implication hat_feather (1306) -> headwear (271661)
create implication hat_feather (1306) -> hat (249138)