This unexported helper function creates a list with contents of a vector spit into chunks. The user can specify how large each chunk should be with the "size" argument.
to_chunk(x, size)
A list with as many elements as the number of chunks created. Each element will include vector with a length equal to the "size" specified.
Vector to be split into chunks as large as the "size" specified
Width of the chunks for "x" vector