extensions added
renamed Utils to SapUtilities
fix error in ToString() override
some tests for the initial implementation of deltaprovider
linq query instead of value collecting visitor implementation - it's actually faster
namevaluepair class added to avoid using my beloved tuple
NameValuePair changed to MemberBasicInfo - has two new readonly fields to indicate underlying type and if it is an actual class

some new tests
added legacy dlls that will be used in tests
moved DeltaServiceTests to this project
deleted a project
added big legacy objects for testing purposes