* Remove rustc dependency from ed25519 and refactor a little.
* Runtime support provides more extensive test-key functionality.
* Additional APIs for ed25519 stuff.
* Extensive test for test-runtime.
* Fixes for the new test key API.
* Additional convenience for tests
* Take advantage of more convenient API.
* Redo formating.
* Remove old test identities.
* Remove boilerplate, add test.
* Refactor out unneeded code.
* Clean up algo for determining authorities.
* Remove unneeded API.
* Make `to_*` consume
* Only export keyring when testing
* Fix build & warning
* Extract Keyring into separate library.
* Add tests for Keyring and a trait-based API.
* Address grumbles.
* Introduce simple blockchain runtime for substrate tests.
* Remove bad files.
* Add needed wasm binaries.
* Refactoring.
- Repot files in test-runtime.
- Rename troublesome `Joiner::join` to `Joiner::and`.
- Rework `Slicable` to dedup code.
* More fixes and refactoring
* Rebuild substrate test wasm.
* Fix merge errors.
* Rename the disasterously named `to_vec` to `encode`.
Also rename `as_slice_then` to `with_encoded`.
* Tests for toy runtime.
* Fix doc nit
* client-api type and move duty roster types to primitives
* tuple implementation for slicable
* mild cleanup of deserialization code
* stubs which handle encoding and decoding themselves
* fancier impl_stubs macro
* zero-copy slicable API
* minimal polkadot-client API
* fix WASM API generation
* move native environment stuff to substrate executor
* fix warnings and grumbles
Gav