macrotize tuple impls
macrotize tuple impls

Hoverbear/serde,JohnHeitmann/serde,tempbottle/serde,eefriedman/serde,csmulhern/serde,serde-rs/serde,thorbenk/serde,jmesmon/serde,pcwalton/serde,erickt/serde,oli-obk/rust-serde,infinityb/serde,Byron/serde,Ticki/serde,skade/serde,3Hren/serde,sidred10/serde