* Update dependencies

Upgrades Substrate based dependencies from v2.0.0 -> v2.0.0-alpha.1
and uses the `jsonrpsee`'s new feature flags. The actual code hasn't
been updated though, so this won't compile.

* Use `RawClient`s from `jsonrpsee`

* Update to use jsonrpsee's new API

* Hook up Ethereum Bridge Runtime, Relay, and Node Runtime

* Bump `parity-crypto` from v0.4 to v0.6

Fixes error when trying to compile tests. This was caused by
`parity-crypto` v0.4's use of `parity-secp256k1` over `secp256k1'.
Using the Parity fork meant multiple version of the same underlying
C library were being pulled in. `parity-crypto` v0.6 moved away from
this, only relying on `secp256k1` thus fixing the issue.

* Copy node-template over from Substrate repo

Got the template at rev=6e6d06c33911

* Use dependencies from crates.io + stop renaming on import

* Remove template pallet

* Stop using crates.io dependencies

Instead they're going to be pinned at v2.0.0-alpha.2
at commit `2afecf81ee19b8a6edb364b419190ea47c4a4a31`
until something stable comes along.

* Remove LICENSE

* Change references of `node-template` to `bridge-node`

* Remove README

* Fix some missed node-template references

* Add WASM toolchain to CI

* Be more specific about nightly version to use

* Maybe don't tie to a specific nightly

* Use composite accounts

* Update to use lazy reaping

* Only use Development chain config

* Initial commit. CLI which parses RPC urls.

* Establish ws connections and make simple RPC requests.

* Complete bridge setup.

* Process subscription events.

* Ctrl-C handler.

* Write a bare-bones README and copy in design doc.

* Modularize code a little bit.

* Communicate with each chain in a separate task.

* Parse headers from RPC subscription notifications.

* Send (fake) extrinsics across bridge channels.

And now it's deadlocked.

* Fix deadlock.

* Clarify in README that this is not-in-progress.

* Move everything into a single folder

* Move Substrate relay into appropriate folder

* Get the Substrate Relay node compiling

* Update Cargo.lock

* Use new composite accounts from Substrate

* Remove specification document

It has been moved to the Wiki on the Github repo.

* Update author + remove comments

* Use latest master for jsonrpsee

Required renaming some stuff (e.g Client -> RawClient)

Co-authored-by: Jim Posen <[email protected]>

commit e31c1965a2e6b9a21ce68be63b81915b2b090f1d
Author: Hernando Castano <[email protected]>
Date:   Sun Feb 2 21:15:42 2020 -0500

    Get Ethereum bridge module compiling

commit a497fc1640e68682f61b39414ffb15206c6120e2
Author: Hernando Castano <[email protected]>
Date:   Thu Jan 30 12:15:43 2020 -0500

    Make the toml file look a bit better

commit 898fb7b06cfac7cf866e1a28fed9a4f02bd246a7
Author: Hernando Castano <[email protected]>
Date:   Thu Jan 30 12:06:27 2020 -0500

    Get substrate bridge module compiling

commit 81e1547e6bec9f590cad9ffba0ee5dfa82cda1c1
Author: Hernando Castano <[email protected]>
Date:   Thu Jan 30 11:40:29 2020 -0500

    Create workspace and move more files around