Update feature declarations
Update feature declarations

huonw/image,tomaka/image,PistonDevelopers/image,mbrubeck/image,twoodford/image,theotherphil/image,hetzge/image,JaySon-Huang/image,dtwood/piston-image,TyOverby/rust-image,lady-segfault/image,PistonDevelopers/image,nwin/rust-image,bvssvni/image