* feat(parity-clib asynchronous rpc queries)
* feat(seperate bindings for ws and rpc)
* Subscribing to websockets for the full-client works
* feat(c binding unsubscribe_from_websocket)
* fix(tests): tweak CMake build config
* Enforce C+11
* refactor(parity-cpp-example) : `cpp:ify`
* fix(typedefs) : revert typedefs parity-clib
* docs(nits)
* fix(simplify websocket_unsubscribe)
* refactor(cpp example) : more subscriptions
* fix(callback type) : address grumbles on callback
* Use it the example to avoid using global variables
* docs(nits) - don't mention `arc`
* fix(jni bindings): fix compile errors
* feat(java example and updated java bindings)
* fix(java example) : run both full and light client
* fix(Java shutdown) : unsubscribe to sessions
Forgot to pass the JNIEnv environment since it is an instance method
* feat(return valid JString)
* Remove Java dependency by constructing a valid Java String in the callback
* fix(logger) : remove `rpc` trace log
* fix(format)
* fix(parity-clib): remove needless callback `type`
* fix(parity-clib-examples) : update examples
* `cpp` example pass in a struct instead to determines `callback kind`
* `java` add a instance variable the class `Callback` to determine `callback kind`
* fix(review comments): docs and format
* Update parity-clib/src/java.rs
Co-Authored-By: niklasad1 <niklasadolfsson1@gmail.com>
* fix(bad merge + spelling)
* fix(move examples to parity-clib/examples)
* Parity as a library
* Fix concerns
* Allow using a null on_client_restart_cb
* Fix more concerns
* Test the C library in test.sh
* Reduce CMake version to 3.5
* Move the clib test before cargo test
* Add println in test
