* [deps futures]: remove unused features

I got annoyed that we bring in `futures-executor` as a dependency however `soketto` does this too, so doesn't help
for the `WS` stuff.

* cargo fmt

* add wrapper crate

* add jsonrpsee crate back

* [jsonrpsee]: feature gate modules

* [proc macros]: support crate renaming of `types`

* Update proc-macros/src/lib.rs

Co-authored-by: David <[email protected]>

* re-export types

* [proc macros]: remove unused features

* Update proc-macros/Cargo.toml

* fix bad merge

Co-authored-by: David <[email protected]>

* refactor benches

* start

* fix build: enable `raw value` feature serde_json

* start

* port it

* make tests compile

* fix bench

* fix bench

* introduce builder pattern

* tweaks

* remove unused code

* cleanup

* [http server]: configure tcp socket manually.

The major reason is to provide a uniform API with the WebSocket server to return the local address.

* remove unused deps

* [examples]: remove needless sleep

* chore: add docs and refactor noise.

* Update types/src/jsonrpc/error.rs

* http server use constants

* prep for client release.

* fix nits

* add changelogs

* Update http-client/src/lib.rs

Co-authored-by: David <[email protected]>

* address grumbles: one changelog

* 0.2.0-alpha

* revert rust2018 lint

Co-authored-by: David <[email protected]>

* draft: client trait sketch...

* use async_trait instead of `Box<Future>`

* refactor client trait

* [types]: shared client types.

* integrate with `jsonrpsee_proc_macros::rpc_api`

* Update proc-macros/src/lib.rs

* integrate with proc macros

* fix: hacky support for generic types in proc macro

* fix: make the examples work.

* trait: error associated type

* Update types/src/traits.rs

* client trait: make object safe.

Make the trait usable as a trait object i.e, `Box<dyn Trait>`

* client trait: remove `Self::Sized`

* add tests for proc macros.

* fix build

* fmt

* [client trait]: remove unused associated error typ

* [proc macros]: separate enum variant each return_t

* add tracking issue to `TODO`

* doc(client trait): improve documentation.

* separate trait for subscribing client

* add documentation

* proc macros: remove debug impl

* fix compile warns

* address grumbles: remove fn process_response

* Update types/src/client.rs

Co-authored-by: David <[email protected]>

* Update types/src/client.rs

Co-authored-by: David <[email protected]>

* Update types/src/client.rs

Co-authored-by: David <[email protected]>

* Update types/src/client.rs

Co-authored-by: David <[email protected]>

* Update types/src/client.rs

Co-authored-by: David <[email protected]>

* remove old proc macro tests

* address grumbles: shorter lines

Co-authored-by: David <[email protected]>

* fix examples

* fix nit