Merge pull request #222 from jasperdk/master

Bugfixing transaction handling bug in MS SQL server saga persister
updated changelog
ignore test that kills the Rabbit
added test to verify presence of null property problem with SQL saga persister
skip null values in saga index
updated changelog
argh bummer! fixed bug in SQL server saga persister
added ;
made it configurable whether to save null-valued correlation properties in the saga index
use the session's document store to lookup conventions
RavenDB saga persister can now obtain its session from the outside
Show Cleanup() not called && connection leak
Call cleanup when TransactionScope is disposed
Corrected missing file name in .csproj file
Merge pull request #226 from mgayeski/master

Tests & Fix for Issue #225
added missing category attribute and an entry in the changelog
added license file
Updated license info
added test to verify handler filter behavior
several Subscribe/Unsubscribe overloads