set docs: change the name of the parameter of set-union to avoid shadowing 'set'   used the name 'st' following the style guide's suggestion of 'lst' for lists   since it should use the same parameter name everywhere, change this everywhere   also: rackety
set docs: change the name of the parameter of set-union to avoid shadowing 'set'
  used the name 'st' following the style guide's suggestion of 'lst' for lists
  since it should use the same parameter name everywhere, change this everywhere
  also: rackety

mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket