* Minor: improve javadocs in NodeInfo
* Minor: use package descriptions in Kotlin build of api docs too, not just javadocs.
* RPC: make RPCConnection non-internal, as it's a core API. Move docs around so they're on public API not internal API.
* Add an IntelliJ scope that covers the currently supported Corda API.
This is useful when used in combination with the "Highlight public
declarations with missing KDoc" inspection.
* Ironic: upgrade the version of the Gradle plugin that checks for upgraded versions of things.
It had broken due being incompatible with the new versions of Gradle
itself.
* Docs: flesh out javadocs on ServiceHub
* Docs: add @suppress to a few things that were polluting the Dokka docs.
* Docs: mention RPC access in NodeInfo javadoc
