Output size configuration

[artvel]

Is it possible to configure the output of tynilib to achieve a result like "github.com/vmihailenco/msgpack/v5" with:

	var buf bytes.Buffer
	enc := msgpack.NewEncoder(&buf)
	enc.UseArrayEncodedStructs(true) // <---------
	enc.UseCompactInts(true) // <---------
	enc.UseCompactFloats(true) // <---------
	_ = enc.Encode(val)

to keep the output as low as possible..?

[klauspost]

UseArrayEncodedStructs is tuples.
UseCompactInts is already done.
UseCompactFloats... Funny - have a PR ready with that.

[klauspost]

Compact floats: #366