add `define-values` syntax
add `define-values` syntax

leavesbnw/picrin,leavesbnw/picrin,ktakashi/picrin,omasanori/picrin,picrin-scheme/picrin,omasanori/picrin,dcurrie/picrin,koba-e964/picrin,picrin-scheme/picrin,koba-e964/picrin,koba-e964/picrin,dcurrie/picrin,leavesbnw/picrin,ktakashi/picrin,ktakashi/picrin