* Completely rework dispatch mechanism into something modular.

Not yet complete but 75% there.

* Council vote tests.

* Fix tests.

* whitespace.

* Fix demo runtime tests.

* Fix up tests.

* Remove dead code.

* Use match for Id

* Make PrivPass better protected.

* Address other grumbles.

* Give PrivPass a private member.

* Testing PrivPass.

* Add docs.

* improve ed25519 bindings

* probably broken child derivation

* basic keystore

* keystore integration in CLI

* constant-time mac comparison

* fix spaces

* initial draft of the macro

* traits for all storage types

* test for list wrapper

* map API

* move generator to runtime-support

* specialize traits further for runtime storage

* restore storage vec for unhashed

Substrate demo (a basic blockchain made with substrate)

* 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