Created AttributedContainerBuilder instead of AttributedComponentUtil.
AttributedContainerBuilder supports EnableTestScope.
Check ComponentAttribute exists.
Created TestTool.
TestTool  supports Moq.
Update nuspecs.
TestContainerContext gets ITestContainerHandler with InitializeIfRequired().
Check a scope is defined.
Compare tags with Object.Equals instead of ==.
Use TestScope tag instead of null internally.
Updated nuspec.