Add missing rpc methods

Author: chiliec

README.md

@@ -20,7 +20,7 @@ Award someone:
 ```python
 from viz import Client
 
-node = "https://node.viz.cx/"
+node = "wss://node.viz.cx/ws"
 viz = Client(node=node, keys=["5...your_private_regular_key..."])
 initiator = "your_account"
 percent = 10.5

vizapi/consts.py

@@ -30,6 +30,12 @@
     "verify_account_authority": "database_api",
     "get_database_info": "database_api",
     "get_proposed_transactions": "database_api",
+    "get_irreversible_block_header": "database_api",
+    "get_irreversible_block": "database_api",
+    "get_proposed_transaction": "database_api",
+    "get_accounts_on_sale": "database_api",
+    "get_accounts_on_auction": "database_api",
+    "get_subaccounts_on_sale": "database_api",
     "check_authority_signature": "auth_util",
     "broadcast_transaction": "network_broadcast_api",
     "broadcast_transaction_synchronous": "network_broadcast_api",
@@ -91,6 +97,8 @@
     "get_blog_authors": "follow",
     "get_inbox": "private_message",
     "get_outbox": "private_message",
+    "get_miner_queue": "witness_api",
+    "get_witnesses_by_counted_vote": "witness_api",
     "get_active_witnesses": "witness_api",
     "get_witness_schedule": "witness_api",
     "get_witnesses": "witness_api",
@@ -101,4 +109,5 @@
     "test_api_a": "test_api",
     "test_api_b": "test_api",
     "api_name": "json_rpc",
+    "get_account": "custom_protocol_api",
 }