* Peerset::discovered accepts many peer ids

* Improve tracing in peerset

* Introduction of PeersetHandle

* integrate PeersetHandle with the rest of the codebase

* fix compilation errors

* more tests for peerset, fixed overwriting bug in add_reserved_peer

* Slots data structure and bugfixes for peerset

* bend to pressure

* updated lru-cache to 0.1.2 and updated linked-hash-map to 0.5.2

* peerset discovered list is now a LinkedHashMap

* fix review suggestions

* split back Peerset and PeersetHandle

* test for Peerset::discovered

* applied review suggestions

* fixes to peerset::incoming

* peerset disconnects are all instantaneous

* instantaneous drop in peerset finished

* Peerset::set_reserved_only can also reconnect nodes

* Peerset scores cache uses lru-cache

* remove redundant function call and comment from Peerset::on_set_reserved_only

* add_peer returns SlotState enum

* apply review suggestions

* is_reserved -> is_connected_and_reserved

Both functions will ignore any overlayed changes and access the backend
directly.

* cache changes trie config in db storage

* Update core/client/db/src/lib.rs

Co-Authored-By: svyatonik <[email protected]>

* Update core/client/db/src/lib.rs

Co-Authored-By: svyatonik <[email protected]>

* Add some tests

* More tests

* Switch to `derive(Encode, Decode)` for `Call`

* Update lock files

* Simplify the macro cases

* Replace Vec<u8> with [u8; 32] for contract storage key

* Read storage keys from sandbox memory into fixed size buffer

* Increment `impl_version`

* implement contract events

* update runtime

* renaming

* update test code hash

* improve complexity details

* add deposit event base cost

* add test

* Revert "add deposit event base cost"

This reverts commit 58ec010c.

* update test

* Revert "update test"

This reverts commit 6fe61a59.

* Revert "Revert "add deposit event base cost""

This reverts commit 145e8a9b.

* Fix format a bit

* ensure imbalances are properly accounted for

* bump runtime version

* Update node/runtime/src/lib.rs

* Consensus status packet

* Allow for repropagation after status

* More generic gossip

* add a basic view struct and gossip module

* move gossip stuff to the gossip module

* integrate view into gossip

* some reshuffling

* alter rules for keeping one commit at a time in view

* Allow sending addressed messages

* don't cast outgoing votes if we know that we voted before

* Handle one hop messages

* initial run at polite grandpa

* build WASM

* handle neighbor messages

* refactor validator's internals into an Inner struct

* gossip only knows to keep or discard messages. optimize should_send_to

* Periodic rebroadcast

* implement `should_send_to` and message_expired

* track peers' best received commit height

* Pass peer id to topic steam

* kill rebroadcasting network

* Notify about existing peers

* clean up network APIs a bunch

* implement gossip::send_message for direct messages

* refactor network trait

* implement gossip::send_message for direct messages

* get all non set-change tests passing

* treat unknown rebroadcasts as broadcasts

* get all other main tests passing

* remove unimplemented test

* everything compiles

* treat unknown rebroadcasts as broadcasts

* Rebradcast interval

* Apply suggestions from code review

Style

Co-Authored-By: arkpar <[email protected]>

* Style

* some module docs

* address some grumbles + docs

* allow rebroadcast every few minutes

* send_topic && generic context

* some tests for view change

* more grumbles & tests

* use send_peer

* Nasty patch for election

* cleanup

* a few more comments.

* minor fixes

* Improve comment