Feature Request: /transaction/<hash> should return additional useful fields

[hiddentao]

The proxy /transaction/<hash> endpoint should additionally return:

• The date timestamp
• The gasUsed value
• The transaction hash (this may seem redundant but is actually useful for when passing the returned object around)
• The transaction status field should reflect the actual transaction execution result, i.e passed or failed. In addition to this the error message should be available somewhere (e.g. "not enough gas")