1.3.1

Released: March 9, 2019

• [bug] [mssql] A commit() is emitted after an isolation level change to SNAPSHOT, as both
  pyodbc and pymssql open an implicit transaction which blocks subsequent SQL
  from being emitted in the current transaction.

  This change is also backported to: 1.2.19

  References: #4536

• [bug] [mssql] Fixed regression in SQL Server reflection due to #4393 where the
  removal of open-ended **kw from the Float datatype caused
  reflection of this type to fail due to a "scale" argument being passed.

  References: #4525

• [bug] [ext] [orm] Fixed regression where an association proxy linked to a synonym would no
  longer work, both at instance level and at class level.

  References: #4522