2.4.0

• Disabled supports_ignore_conflicts feature (#11)
• .count() can now be used with Subquery and Exists (#15)
• Ported ATan2, Log, Ln, Round (3f3898a)
• Fixed boolean values in annotations (#17)
• Enabled feature has_native_uuid_field (#20)
• Added initial support for SQL Server 2005 (d50e574)