INT-2923 3.0 Reference Changes

Move 2.2. "What's New" to Change History Appendix.
Merge pull request #740 from garyrussell/INT-2923

* garyrussell-INT-2923:
  INT-2923 3.0 Reference Changes
INT-2920 Fix two hits to MessageStore

Reduce ClaimCheckOutTransformer's hits to the MessageStore.

JIRA: https://jira.springsource.org/browse/INT-2920

Add @author and update copyright

Fixed missing semi-colon
Merge pull request #736 from nickspacek/INT-2920