Adds UnspentBestChainUtxo request which is used in mempool tx validation: when a tx is added to mempool we look for it's spent utxos only in the best chain (not in any chain) closes #41.
Also when tested UnspentBestChainUtxo request a bug was discovered in checking komodo rate limiter result - fixed: partially closes #25
Adds UnspentBestChainUtxo request which is used in mempool tx validation: when a tx is added to mempool we look for it's spent utxos only in the best chain (not in any chain) closes #41. Also when tested UnspentBestChainUtxo request a bug was discovered in checking komodo rate limiter result - fixed: partially closes #25