By this release it would be good to have integrated more scale-value where it makes sense

Eg APIs for:

• building and submitting a transaction using dynamic scale-value values.
• getting events back as dynamic values (done already)
• decoding storage?

It would be nice to have a prototype tool in place that allows offline construction of transactions from Value's + metadata, too. This will help validate that the dynamic stuff works and is useful.

See #406 for earlier thoughts on all of this.