Merge branch 'master' of https://github.com/nunit/nunit-framework into remove-addins
Add IImplyFixture marker interface and use it to determine whether a non-attributed class is a fixture; Remove Internal/Interfaces directory
Merge latest changes from master
Move all building of test cases into the attributes and remove classes no longer needed
Fix error in handling expected results; eliminate alternate exception handler feature for ExpectedExceptions; Add new IComandDecoratorSource interface; general refactoring and simplification of test case building
Further refactoring of test case building; remove TestFixtureBuilder and ITestExpectedResult; fix some CLS-compatibility issues and remove warnings
Merge branch 'master' of https://github.com/nunit/nunit-framework into remove-addins
Merge changes from master
Merge pull request #106 from nunit/remove-addins

Remove addins - stage 3
Merge branch 'master' of https://github.com/nunit/nunit-framework into remove-expected-exception
Remove uses of ExpectedException - pass 4