replaced tail by uncons in export *and* docu
replaced tail by uncons in export *and* docu

rgrempel/core,isaacsanders/core,colinmccabe/core,eeue56/core,Pisys/core,ThomasWeiser/core,eeue56/core,martinos/core,vilterp/core,rgrempel/core,krisajenkins/core,Dandandan/core,alexiamcdonald/elm-core,alexiamcdonald/elm-core,Pisys/core,colinmccabe/core,suryagaddipati/core,laszlopandy/core,manleyjster/core,bradurani/core,laszlopandy/core,martinos/core,manleyjster/core,simonh1000/core,suryagaddipati/core,isaacsanders/core,krisajenkins/core,vilterp/core,ThomasWeiser/core,bradurani/core,rick68/core,rick68/core,simonh1000/core,Dandandan/core