Rename DefaultContextInteractionsImpl to DefaultContextInteractionsSkill (issue #9).
Rename RepositoryImplFactory to DistributedDataStructureFactory (issue #10).
Make SpaceBase public (issue #19).
Make public the implementations of SpaceBase (isse #23).
Move the class JanusConfig from "io.janusproject.repository" to "io.janusproject" (issue #3).
Rename KernelRepositoryService to KernelDiscoveryService, and move it into the kernel's package to avoid cyclic dependencies among the packages (issue #4).