* Detect rust compiler version in Parity build script, closes #4742

* updated required compiler version message

* fixed typo

* Fix whitespace.

* Update copyright years/owner.

* Push release only for tags.

- Move Updater into its own crate.
- Change ethcore -> parity in authors, homepages and licenses.

* Splitting methods requiring signing into separate trait

* Single place where RPC apis are created.

* Separating eth_filter

* Separating eth_signing

* Stubs for Personal Signer methods

* Test for EthSigningQueueClient

* TransactionConfirmation API

* Exposing PersonalSigner API

* Defining ApiSets dependent on context

* Removing types

* Fixing default impl

* Fixing un-mocked tests

* Update signing_queue.rs

[ci skip]

* Removing unused import [ci skip]

* Basic signing queue

* Adding docs

* WebSockets server for signer

* Removing TODO

* Shortening the syntax

* Exposing types from RPC

* Fixing indentation

* Update main.rs