Ensure single quotes appear in documentation sample

Issue: SPR-12186
Add user to DISCONNECT in StompSubProtocolHandler

Issue: SPR-12215
Update SessionDisconnectEvent

SessionDisconnectEvent now extends AbstractSubProtocolEvent.

Issue: SPR-12156
Consistent exclusion of bridge methods in annotation post-processors (for Java 8 compatibility)

Issue: SPR-12187
Restored property source ordering (fixing regression from 4.0.x)

Issue: SPR-12198
Polishing
Refined exclusion of bridge methods in annotation post-processors (for Java 8 compatibility)

Issue: SPR-12187
(cherry picked from commit 29abca5)
Refined tests for property source ordering

Issue: SPR-12198
(cherry picked from commit 205e681)