macros: bump to 0.1.37
macros: bump to 0.1.37

rust-num/num-traits,koverstreet/num,rust-lang/num,rust-num/num,DonSheddow/num,rust-num/num-traits,rust-num/num,vks/num,koverstreet/num,rust-num/num-integer,rust-lang/num,rust-num/num-bigint,vks/num,DonSheddow/num,rust-num/num-integer,rust-num/num-bigint