* CORDA-305: Refactor CordaRPCClient into :client:rpc module
* CORDA-305: Remove the Kotlin test framework from the artifacts.
* CORDA-305: Migrate serialisation whitelist into node-api module.
* CORDA-305: Clean up unused RPC observables.
* CORDA-305: Add :client:rpc module to documentation tasks.
* CORDA-305: Include :finance into :client:rpc for its serialisable classes.
* CORDA-305: Move test classes into the correct directory.
* CORDA-305: Migrate :finance dependency from :client:rpc into DemoBench.
* CORDA-305: Update wording of TODO about handling Observables.
* CORDA-304: Refactor :client modules into :client:javafx and :client:mock.
* CORDA-304: Add :client:mock to Dokka tasks, and remove unused integrationTest task.
* CORDA-304: Migrate DriverBasedTest from node into test-utils.
* CORDA-304: Rename .fx. package to .jfx. to prevent confusion with "exchange rate".
* CORDA-304: Rename module to ':client:jfx'.