Added notation about MSSmallDate fix into CHANGES.
Added notation about MSSmallDate fix into CHANGES.

(cherry picked from commit 461ee7e08bb2a6f7b10b1c9f1348cc29bfecacbb)

davidjb/sqlalchemy,bootandy/sqlalchemy,robin900/sqlalchemy,zzzeek/sqlalchemy,sandan/sqlalchemy,graingert/sqlalchemy,pdufour/sqlalchemy,olemis/sqlalchemy,davidfraser/sqlalchemy,sandan/sqlalchemy,WinterNis/sqlalchemy,sqlalchemy/sqlalchemy,Akrog/sqlalchemy,276361270/sqlalchemy,dstufft/sqlalchemy,ThiefMaster/sqlalchemy,wfxiang08/sqlalchemy,hsum/sqlalchemy,EvaSDK/sqlalchemy,WinterNis/sqlalchemy,davidjb/sqlalchemy,bdupharm/sqlalchemy,Cito/sqlalchemy,alex/sqlalchemy,wujuguang/sqlalchemy,inspirehep/sqlalchemy,itkovian/sqlalchemy,davidfraser/sqlalchemy,monetate/sqlalchemy,halfcrazy/sqlalchemy,Cito/sqlalchemy,dstufft/sqlalchemy,monetate/sqlalchemy,wfxiang08/sqlalchemy,brianv0/sqlalchemy,alex/sqlalchemy,epa/sqlalchemy,halfcrazy/sqlalchemy,graingert/sqlalchemy,hsum/sqlalchemy,bootandy/sqlalchemy,elelianghh/sqlalchemy,brianv0/sqlalchemy,robin900/sqlalchemy,EvaSDK/sqlalchemy,itkovian/sqlalchemy,Cito/sqlalchemy,pdufour/sqlalchemy,bdupharm/sqlalchemy,inspirehep/sqlalchemy,Akrog/sqlalchemy,elelianghh/sqlalchemy,276361270/sqlalchemy,wujuguang/sqlalchemy,j5int/sqlalchemy,olemis/sqlalchemy,alex/sqlalchemy,ThiefMaster/sqlalchemy,epa/sqlalchemy,j5int/sqlalchemy