Implement eth_getBlockReceipts API (Closes #434)

[trinhdn2]

Spec of eth_getBlockReceipts API

Returns information about a block receipts by block number.

Parameters

1. Quantity or Tag - integer of a block number, or the string 'earliest', 'latest' or 'pending', as in the default block parameter.

   params: ["0x8d2b29"]

   Returns Array - The list of Receipt object of the given block

   {
   "id": 1,
   "jsonrpc": "2.0",
   "result": [
   {
     "blockHash": "0x64d67cf84d95f8dfa1e1c3b5a5260aaf801ac99529b4ec3ae19bb06ba78c7bd5",
     "blockNumber": "0x8d2b29",
     "contractAddress": null,
     "cumulativeGasUsed": "0x5208",
     "from": "0x4d6bb4ed029b33cf25d0810b029bd8b1a6bcab7b",
     "gasUsed": "0x5208",
     "logs": [],
     "logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
     "root": null,
     "status": "0x1",
     "to": "0xe9c245293dac615c11a5bf26fcec91c3617645e4",
     "transactionHash": "0x1eba82fb5e8426b520c49a5d8dc6c24157e8f45fb9102aca4a99f5617c1539fc",
     "transactionIndex": "0x0"
   },
   {
     "blockHash": "0x64d67cf84d95f8dfa1e1c3b5a5260aaf801ac99529b4ec3ae19bb06ba78c7bd5",
     "blockNumber": "0x8d2b29",
     "contractAddress": null,
     "cumulativeGasUsed": "0x3fc28",
     "from": "0x0caf0d921b2bd24ca04e1f06344e976af223783b",
     "gasUsed": "0x3aa20",
     "logs": [],
     "logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
     "root": null,
     "status": "0x1",
     "to": "0xf2bb17cb59746cae43d65eec233925b6584cddef",
     "transactionHash": "0x70a50d28db69e5c7a8686141f282530d52e7e3c625296dc53eb5684afa727886",
     "transactionIndex": "0x1"
   }
   ]
   }