* Store dht enrs on shutdown
* Load enrs on startup and add tests
* Remove enr_entries from behavior
* Move all dht persisting logic to `NetworkService`
* Move `PersistedDht` from eth2-libp2p to network crate
* Add test to confirm dht persistence
* Add logging
* Remove extra call to beacon_chain persist
* Expose only mutable `add_enr` method from behaviour
* Fix tests
* Fix merge errors
* Create libp2p instance
* Change logger to stdlog
* test_connection initial commit
* Add gossipsub test
* Delete tests in network crate
* Add test module
* Clean tests
* Remove dependency on discovery
* Working publish between 2 nodes
TODO: Publish should be called just once
* Working 2 peer gossipsub test with additional events
* Cleanup test
* Add rpc test
* Star topology discovery WIP
* build_nodes builds and connects n nodes. Increase nodes in gossipsub test
* Add unsubscribe method and expose reference to gossipsub object for gossipsub tests
* Add gossipsub message forwarding test
* Fix gossipsub forward test
* Test improvements
* Remove discovery tests
* Simplify gossipsub forward test topology
* Add helper functions for topology building
* Clean up tests
* Update naming to new network spec
* Correct ssz encoding of protocol names
* Further additions to network upgrade
* Initial network spec update WIP
* Temp commit
* Builds one side of the streamed RPC responses
* Temporary commit
* Propagates streaming changes up into message handler
* Intermediate network update
* Partial update in upgrading to the new network spec
* Update dependencies, remove redundant deps
* Correct sync manager for block stream handling
* Re-write of RPC handler, improves efficiency and corrects bugs
* Stream termination update
* Completed refactor of rpc handler
* Remove crates
* Correct compile issues associated with test merge
* Build basic tests and testing structure for eth2-libp2p
* Enhance RPC tests and add logging
* Complete RPC testing framework and STATUS test
* Decoding bug fixes, log improvements, stream test
* Clean up RPC handler logging
* Decoder bug fix, empty block stream test
* Add BlocksByRoot RPC test
* Add Goodbye RPC test
* Syncing and stream handling bug fixes and performance improvements
* Applies discv5 bug fixes
* Adds DHT IP filtering for lighthouse - currently disabled
* Adds randomized network propagation as a CLI arg
* Add disconnect functionality
* Adds attestation handling and parent lookup
* Adds RPC error handling for the sync manager
* Allow parent's blocks to be already processed
* Update github workflow
* Adds reviewer suggestions
* Rename `hashing` crate to `eth2_hashing`
* Add license, desc to eth2_hashing Cargo.toml
* Remove merkle root from eth2 hashing
* Remove old benches folder (zombied from old branch)
* Add docs to eth2_hashing
* Prepare tree_hash for publishing on crates.io
* Update deps to use crates.io instead of paths
* Update all crates to pull ssz from crates.io
* Remove cached_tree_hash, add patches to manifest
* Fix compile error in benches
* Remove unused code
* Fix fake_crypto compile error
* Fix syncing bugs by recursively attempting to process parents in the import queue, change BlockRootsIterator
* Swap from crossbeam channel to tokio mpsc
* Recursion fix
* Remove exess block processing
* Fix network lag, correct attestation topic
* Correct network poll logic
* Overhaul of SimpleSync and modify BlockRootsIterator to return start_slot
* Fix bug in tests relating to StateRootsIterator
* Remove old, commented-out heartbeat code.
* Tidy docs on import queue enum
* Change source logging msg in simple sync
* Rename function parameter in simple sync
* Use `BestBlockRootsIterator` in `reduced_tree`
* Update comments for `BestBlockRootsIterator`
* Fix duplicate dep in cargo.toml
