Function intersperse

Intersperse the the argument bewteen each element of the iterator.

Example

   pipe(
     itr8FromArray([ 'hello', 'world', 'and', 'goodbye' ]),
     intersperse('|'), // => [ [ 'hello', '|', 'world', '|', 'and', '|', 'goodbye' ] ]
   );

Example

   pipe(
     itr8FromArray([ 1, 2, 3, 4 ]),
     intersperse(true), // => [ 1, true, 2, true, 3, true, 4 ]
   );