The Gossipsub PR (#162)

* Add handle_rpc call to pubsub

* Scaffold gossipsub functions

* Add timer

* Implement most of mesh construction

* Implement emit and handle

* Implement fanout heartbeat

* Refactor emit

* some gossipsub cleanup and test

* minor lint stuff, more to come

* Implement publish

* Fix comment

* Modify pubsub/gossipsub so that floodsub tests pass using gossipsub router

* Add floodsub tests to gossipsub

* Handle case where select_from_minus, num_to_select > size(pool-minus)

* Add topic membership

* Implement handle ihave

* Implement most of iwant

* Add mcache.add and comments

* Refactor handle_ihave

* Implement stream write in handle_iwant

* Implement gossip heartbeat

* unresolved vars

* initial mcache code

* documenting mcache

* writing test/debugging mcache

* finished mcache test and debugged

* Make gossipsub backward compatibility its own file

* remove mcache prints

* DEBUGGING

* Add sender_peer_id to handle_rpc to get gossip test passing

* Modify gossipsub to make fanout work

* fanout maintenance test

* debugging gsub GOSSIP

* DEBUGGING

* debugged sender seen cachce

* adding lru, removing prints

* pylint cleanup

* Fix github comments in PR

* minor floodsub possible bugfix

setup.py

@@ -25,7 +25,8 @@ setuptools.setup(
         "rpcudp",
         "grpcio",
         "grpcio-tools",
-        "lru-dict>=1.1.6"
+        "lru-dict>=1.1.6",
+        "aio_timers"
     ],
     packages=["libp2p"],
     zip_safe=False,