added get member extension method + tests; added string isNullOrEmpty extension method + testsa
added string format method + tests
added EventList, which is a normal List<T> but fires events when an item is added or removed; added IO Extensions + tests
added ReadAllText extension method for FileInfo, added MemoryDatabase and Session + tests
added memory session to 40 and 45
implemented flat database + tests (which dont run using NUnit yet...)