- Rename EiMessageHeaderAccessor to IntegrationMessageHeaderAccessor - Remove GenericMessage - Minor TODOs - Start a new What's new" chapter in the reference JIRA: https://jira.springsource.org/browse/INT-3242
- Rename EiMessageHeaderAccessor to IntegrationMessageHeaderAccessor - Remove GenericMessage - Minor TODOs - Start a new What's new" chapter in the reference JIRA: https://jira.springsource.org/browse/INT-3242