The logic here is that we'll have all binary encoding/decoding done via our io
package, which simplifies error handling. This functionality doesn't belong to
util, so it's moved.
This also expands BufBinWriter with Reset() method to fit the needs of core
package.
Simplifies a lot of code and removes some duplication. Unfortunately I had to
move test_util random functions in same commit to avoid cycle
dependencies. One of these random functions was also used in core/transaction
testing, to simplify things I've just dropped it there and used a static
string (which is nice to have for a test anyway).
There is still sha256 left in wallet (but it needs to pass Hash structure into
the signing function).
* deleted transfer_output added asset type and transaction result to core
* removed writing 0x00 when buffer length is 0
* Refactored emit into VM package + moved tx to own package.
* implemented transaction along with claimTransaction.
* refactored naming of transaction + added decode address for uint160 types
* removed unnecessary folder and files.
* transaction/smartcontract logic
* bumped version 0.24.0
