added test for TVP

Added support for table name attribute on POCO class, should work with ANY attribute named "TableAttribute" that has a "Name" property for it's value (supplied one, and also tested with the Table-attribute in EntityFramework).  Cleaned up ProxyGenerator for readability.

Add perf test for dapper contrib
Optimise Get perf for dapper contrib

fixed bug in tests, added support for non-tracked concrete class in Get(), emitting a concrete class which seems stupid, but works (due to the generic get method returning both interface and new class)

Adding IDictionary<string,object> to FastExpando

added the IDictionary interface to the FastExpando dynamic object to make it more easily serializable by most of the common JSON serializers

standardise perf tests on First(); measure buffered and unbuffered (dapper only); introduce * splits, useful for creating tuples of primitives