Slash Authorities for irrefutable misbehavior (#84)

* double-commit and prepare misbehavior

* get misbehavior on completion

* collect misbehavior on drop, not only on success

* kill unused transaction_index field

* add primitive misbehavior report type

* add misbehavior report transaction

* store prior session

* fix set_items

* basic checks for misbehavior reports

* crate for substrate bft misbehavior checking

* integrate misbehavior check crate

* fix comment

* new wasm binaries

* fix hash in test

* import misbehavior transactions into queue

* fix test build

* sign on digest and full proposal when proposing

* detect proposal misbehavior

* fix fallout

* restore balance/bondage types

polkadot/runtime/wasm/Cargo.lock

@@ -392,6 +392,7 @@ version = "0.1.0"
 dependencies = [
  "polkadot-primitives 0.1.0",
  "substrate-codec 0.1.0",
+ "substrate-misbehavior-check 0.1.0",
  "substrate-primitives 0.1.0",
  "substrate-runtime-io 0.1.0",
  "substrate-runtime-std 0.1.0",
@@ -599,6 +600,15 @@ dependencies = [
  "substrate-runtime-std 0.1.0",
 ]
 
+[[package]]
+name = "substrate-misbehavior-check"
+version = "0.1.0"
+dependencies = [
+ "substrate-codec 0.1.0",
+ "substrate-primitives 0.1.0",
+ "substrate-runtime-io 0.1.0",
+]
+
 [[package]]
 name = "substrate-primitives"
 version = "0.1.0"

polkadot/runtime/wasm/Cargo.toml

@@ -12,6 +12,7 @@ substrate-runtime-std = { path = "../../../substrate/runtime-std", default-featu
 substrate-runtime-io = { path = "../../../substrate/runtime-io", default-features = false }
 substrate-runtime-support = { path = "../../../substrate/runtime-support", default-features = false }
 substrate-primitives = { path = "../../../substrate/primitives", default-features = false }
+substrate-misbehavior-check = { path = "../../../substrate/misbehavior-check", default-features = false }
 polkadot-primitives = { path = "../../primitives", default-features = false }
 
 [features]
@@ -22,6 +23,7 @@ std = [
 	"substrate-runtime-std/std",
 	"substrate-runtime-support/std",
 	"substrate-primitives/std",
+	"substrate-misbehavior-check/std",
 	"polkadot-primitives/std",
 ]