* swarm/network/stream: fix a goroutine leak in Registry
* swarm/network, swamr/network/stream: Kademlia close addr count and depth change chans
* swarm/network/stream: rename close channel to quit
* swarm/network/stream: fix sync between NewRegistry goroutine and Close method
* swarm/network: new saturation for implementation
* swarm/network: re-added saturation func in Kademlia as it is used elsewhere
* swarm/network: saturation with higher MinBinSize
* swarm/network: PeersPerBin with depth check
* swarm/network: edited tests to pass new saturated check
* swarm/network: minor fix saturated check
* swarm/network/simulations/discovery: fixed renamed RPC call
* swarm/network: renamed to isSaturated and returns bool
* swarm/network: early depth check
* swarm/network: Revised depth calculation with tests
* swarm/network: WIP remove redundant "full" function
* swarm/network: WIP peerpot refactor
* swarm/network: Make test methods submethod of peerpot and embed kad
* swarm/network: Remove commented out code
* swarm/network: Rename health test functions
* swarm/network: Too many n's
* swarm/network: Change hive Healthy func to accept addresses
* swarm/network: Add Healthy proxy method for api in hive
* swarm/network: Skip failing test out of scope for PR
* swarm/network: Skip all tests dependent on SuggestPeers
* swarm/network: Remove commented code and useless kad Pof member
* swarm/network: Remove more unused code, add counter on depth test errors
* swarm/network: WIP Create Healthy assertion tests
* swarm/network: Roll back health related methods receiver change
* swarm/network: Hardwire network minproxbinsize in swarm sim
* swarm/network: Rework Health test to strict
Pending add test for saturation
And add test for as many as possible up to saturation
* swarm/network: Skip discovery tests (dependent on SuggestPeer)
* swarm/network: Remove useless minProxBinSize in stream
* swarm/network: Remove unnecessary testing.T param to assert health
* swarm/network: Implement t.Helper() in checkHealth
* swarm/network: Rename check back to assert now that we have helper magic
* swarm/network: Revert WaitTillHealthy change (deferred to nxt PR)
* swarm/network: Kademlia tests GotNN => ConnectNN
* swarm/network: Renames and comments
* swarm/network: Add comments
* RequestFromPeers does not use peers marked as lightnode
* fix warning about variable name
* write tests for RequestFromPeers
* lightnodes should be omitted from the addressbook
* resolve pr comments regarding logging, formatting and comments
* resolve pr comments regarding comments and added a missing newline
* add assertions to check peers in live connections
* swarm/network: simplify kademlia/hive; rid interfaces
* swarm, swarm/network/stream, swarm/netork/simulations,, swarm/pss: adapt to new Kad API
* swarm/network: minor changes re review; add missing lock to NeighbourhoodDepthC
