Reduce the amount of recursive walks of the data structure

[callFEELD]

The Encode function inside the Encoder will run twice over the given data structure.

The first walkover is at line 44 in Encoder.go

err, length := countByteLen(data)

The second walkover is at the encoding part.

Check if there is a way to have the memory allocation at a minimum (currently only 1 allocation) and reduce the recursive walk over to 1.