Squashed commit of the following:

commit 6de583a2
Author: Xiliang Chen <[email protected]>
Date:   Wed Apr 10 20:26:29 2019 +1200

    update authers for rest of the node-template cargo.toml files (#2242)

commit 5240bc1f
Author: Bastian Köcher <[email protected]>
Date:   Tue Apr 9 10:31:18 2019 +0200

    Throw a compile error for `on_finalise` and `on_initialise` (#2236)

commit 67d2e71a
Author: Pierre Krieger <[email protected]>
Date:   Tue Apr 9 05:30:43 2019 -0300

    Add warning when using default protocol ID (#2234)

    * Add warning when using default protocol ID

    * Update core/service/src/lib.rs

commit 1421fed6
Author: Xiliang Chen <[email protected]>
Date:   Tue Apr 9 17:22:20 2019 +1200

    update name and authors to placeholder text for node-template (#2222)

    * update name and authors to placeholder text

    * revert package name change

commit 6617f231
Author: André Silva <[email protected]>
Date:   Mon Apr 8 12:50:34 2019 +0100

    grandpa: Voter persistence and upgrade to finality-grandpa v0.7 (#2139)

    * core: grandpa: migrate to grandpa 0.7

    * core: grandpa: store current round votes and load them on startup

    * core: grandpa: resend old persisted votes for the current round

    * core: grandpa: store base and votes for last completed round

    * core: grandpa: fix latest grandpa 0.7 changes

    * core: grandpa: update to grandpa 0.7.1

    * core: grandpa: persist votes for last two completed rounds

    * core: grandpa: simplify VoterSetState usage

    * core: grandpa: use Environment::update_voter_set_state

    * core: grandpa: fix aux_schema test

    * core: grandpa: add docs

    * core: grandpa: add note about environment assumption

    * core: grandpa: don't update voter set state on ignored votes

    * core: grandpa: add test for v1 -> v2 aux_schema migration

    * core: grandpa: add test for voter vote persistence

    * core: grandpa: use grandpa 0.7.1 from crates.io

    * core: grandpa: use try_init in test

    * core: grandpa: add comment about block_import in test

    * core: grandpa: avoid cloning HasVoted

    * core: grandpa: add missing docs

    * core: grandpa: cleanup up can_propose/prevote/precommit

commit 21e0877e
Author: Gregory Terzian <[email protected]>
Date:   Mon Apr 8 13:17:00 2019 +0200

    remove clone bound on specialization in testnet factory (#2157)

commit 7c647466
Author: Andrew Jones <[email protected]>
Date:   Sat Apr 6 12:23:56 2019 +0100

    Contract import/export validation (#2203)

    * Reject validation of contract with unknown exports

    * Validate imports eagerly

    * Increment spec version

commit 12718fac
Author: Pierre Krieger <[email protected]>
Date:   Fri Apr 5 14:07:09 2019 -0300

    Fix state inconsistency between handler and behaviour (#2220)

    * Fix state inconsistency between handler and behaviour

    * Fix the error! being in the wrong place

commit f917d124
Author: Bastian Köcher <[email protected]>
Date:   Fri Apr 5 18:50:38 2019 +0200

    Use `storage_root` of newly calculated header (#2216)

    Instead of calculating the `storage_root` a second time, we just can
    take the `storage_root` from the new header.

commit 3359ce0b
Author: Marek Kotewicz <[email protected]>
Date:   Fri Apr 5 14:44:46 2019 +0200

    Peerset::discovered accepts many peer ids (#2213)

    * Peerset::discovered accepts many peer ids

    * Improve tracing in peerset

commit dd82e0e6
Author: Marek Kotewicz <[email protected]>
Date:   Thu Apr 4 19:40:40 2019 +0200

    simplification of peerset api (#2123)

    * 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

commit d90833d7
Author: Arkadiy Paronyan <[email protected]>
Date:   Thu Apr 4 18:01:28 2019 +0200

    Disconnect on protocol timeout (#2212)

commit c0a46b59
Author: André Silva <[email protected]>
Date:   Thu Apr 4 15:56:49 2019 +0100

    core: grandpa: verify commit target in justification (#2201)

commit 3a4901a7
Author: Bastian Köcher <[email protected]>
Date:   Thu Apr 4 16:56:16 2019 +0200

    Introduce `original_storage` and `original_storage_hash` (#2211)

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

commit a7a469f9
Author: Xiliang Chen <[email protected]>
Date:   Fri Apr 5 03:55:55 2019 +1300

    code cleanup (#2206)

commit 26c7b442
Author: Arkadiy Paronyan <[email protected]>
Date:   Wed Apr 3 15:52:46 2019 +0200

    Emberic elm testnet (#2197)

* Reuse slots data structure also for peerset discovered

* updated peerset docs

...and send the current authority set on each connect.

This reverts commit 1deceead.

* Add warning when using default protocol ID

* Update core/service/src/lib.rs

* update name and authors to placeholder text

* revert package name change

André Silva authored Apr 08, 2019 and asynchronous rob committed Apr 08, 2019

* core: grandpa: migrate to grandpa 0.7

* core: grandpa: store current round votes and load them on startup

* core: grandpa: resend old persisted votes for the current round

* core: grandpa: store base and votes for last completed round

* core: grandpa: fix latest grandpa 0.7 changes

* core: grandpa: update to grandpa 0.7.1

* core: grandpa: persist votes for last two completed rounds

* core: grandpa: simplify VoterSetState usage

* core: grandpa: use Environment::update_voter_set_state

* core: grandpa: fix aux_schema test

* core: grandpa: add docs

* core: grandpa: add note about environment assumption

* core: grandpa: don't update voter set state on ignored votes

* core: grandpa: add test for v1 -> v2 aux_schema migration

* core: grandpa: add test for voter vote persistence

* core: grandpa: use grandpa 0.7.1 from crates.io

* core: grandpa: use try_init in test

* core: grandpa: add comment about block_import in test

* core: grandpa: avoid cloning HasVoted

* core: grandpa: add missing docs

* core: grandpa: cleanup up can_propose/prevote/precommit

* Reject validation of contract with unknown exports

* Validate imports eagerly

* Increment spec version

* Fix state inconsistency between handler and behaviour

* Fix the error! being in the wrong place

Instead of calculating the `storage_root` a second time, we just can
take the `storage_root` from the new header.

* 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.