args... still needs charset minimums (how?)

pwgenerator/errs.go

@@ -5,5 +5,7 @@ import (
 )
 
 var (
-	ErrBadType error = errors.New("cannot typeswitch; unsupported type")
+	ErrBadType           error = errors.New("cannot typeswitch; unsupported type")
+	ErrTooSmall          error = errors.New("password max length too short for specified required chars")
+	ErrSwitchedLenLimits error = errors.New("the max password length is shorter than the minimum password length")
 )