Log Message:
py-sqlalchemy: updated to 1.2.8

Release 1.2.8 includes a fairly broad spectrum of fixes, including fixes for \ 
some memory/synchronization issues within the connection pool, automap and \ 
statement caching functionalities, as well as some issues that were introduced \ 
in the 1.2 series related to the horizontal sharding extension as well as the \ 
dogpile.caching example. Users of the dogpile.cache recipe should review the \ 
changes here when migrating to SQLAlchemy 1.2.