Adding rudimentary JDBC storage

Initially only supporting Postgres; can certainly support others in future. Still need to add transactional support.

increase maximum message size

0.1-alpha.5

Increase publishable message size

Fix bug writing Kafka events

0.1-alpha.4

Fix bug writing kafka events

Snapshot and lifecycle tools

Added support for storage snapshots and application lifecycle notifications

Iterating to initial build

0.1-alpha.2

Adding exclusion to fix build problems

Initial framework release

First alpha