dev: makes test fixture to creaing a specimen without auto-properties.
dev: implements AutoPropertiesAttribute.
dev: imports NoAutoPropertiesAttribute from AutoFixture.Xunit.
refactor: splits TestCaseTest to several test classes corresponding to

each SUT class.
dev: generalizes the TestCase class to avoid ambiguousness between

Action and Func supplied to constructor parameter of generic TestCase.
build: increment minor version,

to indicate that this makes TestCase accepting Delegate as a
constructor parameter to generalize, and removes all the generic
TestCase classes.