Added SqlServer Value() object to allow for types and null specification for Create() objects.
Removed older select/insert/delete/update methods in squallserver and modified test.
SqlServer is at a state where low-level SQL object handling in the adapter can create Tables with Keys and Datatypes provided Field() is used.
Test modified to reflect this, squall.py modified to contain empty classes for sqlserver specific ones until such time as I can develop them.
Test updated.