Rename #attribute_set -> #set_attribute, and #attribute_get -> #get_attribute.
Rename #attribute_set -> #set_attribute, and #attribute_get -> #get_attribute.

dslh/virtus,macressler/virtus,faucct/virtus,mallikarjunayaddala/virtus,solnic/virtus,hapiben/virtus,reevoo/virtus,kristianmandrup/virtus,JustMikey/virtus,baojjeu/virtus,nuclearsandwich/virtus,artemeff/virtus,XescuGC/virtus,lgierth/virtus