[minor] Implemented the unique random generator.
[minor] Changed the default id generator from RandomIdGenerator to UniqueRandomIdGenerator.
Resolved the code analysis error.
Updated version to v3.6.0-beta.
Updated AutoFixture version to v3.0.8.
Resolved the code analysis error.
Added the test assembly 'TDDKata.dll' to the build script.
Added the new test-project 'TestCommonTests' to test only public APIs of TestCommon.
Merge branch 'master' into v4.x

Conflicts:
	src/TestCommon/Fixture.cs
	test/TestCommon.UnitTest/FixtureTest.cs
Added the nuget libraries.
[major] Renamed the static Seed property of the RandomIdGenerator class to DaysOfYear.
Added the new constructs to the UniqueRandomIdGenerator class.
Removed the old construct of UniqueRandomIdGenerator.
Removed delayed singing from the test projects.
Updated the msbuild file.
Updated version to v3.6.0.
Merge branch 'master' into v4.x
[major] Changed the default Ctors value of FixtureConfigs from NotPrivate to Public.
[major] Deleted the WithCtors method of ISpecimenBuilder.
[minor] Supported the internal visible attribute for the DynamicProxyGenAssembly2 assembly name which enables to use internal constructors.
Deleted the CtorAccessModifiers property of ICtorBuilder.