* Servers can no longer error

* Add comment about errors

* Fix comment

* Support generics in proc macro

* Some work on allowing generics for the proc macro

* Add license header everywhere

* Update company name

* Fix bad merge

* Changes to the Client requests/subscriptions API

* Fix rest

* Rework the Client to support multiple concurrent requests

* Restore proc-macro functionnality

* More work

* More work

* Work on the Server subscriptions system

* More work on design

* More work

* More work

* Even more work

* Subscriptions working

* Dix docs

* More test fix

* Fix server-sent subscription notifications

* Add some server tests

* Subscriptions pending system working

* Remove TODO from tests

* Implement close() correctly

* Add comment on close()

* Fix proc macro

* Fix doctest

* Fix local doctest

* Add documentation and error variants to Client

* Reexport missing reexports

* Fix proc macro

* Rework the Client to support multiple concurrent requests

* Restore proc-macro functionnality

* More work

* More work

* More work

* Even more work

* Subscriptions working

* Dix docs

* More test fix

* Add a SubscriptionsClosed server event

* Don't attempt to send back response if connection is closed

* Implement into_subscription

* Properly support params in rpc_api!

* Respond with invalid param in case of parsing error