Wish: Measure execution time of each test

[cwollenhaupt]

Unit tests should be quick to run to be actual unit tests. When running all tests in a class or several classes, it's not possible to spot which test took too long to execute.

• FoxUnit should measure the execution time of each test in ms and display it in the list of tests.
• A filter should allow to limit the list to tests that took longer than a specified threshold
• A new TimeOut method can be called in either SetUp() or a test method to specify the maximum time that a test runs before automatically failing. See implementation in JUnit 4.