0.3.0

• Adopt the Persistent Data framework as storage system for the different rate-limit algorhitms.
• Checkpoint can work with RequestContext context, so you can apply rate-limit for the current available Hummingbird context types or with your custom types.
• Tests now adopts the MemoryPersistDriver storage driver instead of Redis driver. No need to run a Docker container with a Redis image to run tests.