Don't show skip/todo tests in the mini reporter

[sindresorhus]

They're usually not visible to the human eye anyways.

From: #618 (comment)

[sindresorhus]

Just a thought, but what if we showed both the current test, and the last failed test. Or maybe just the counts and the last failed test (Since we intend to print pending tests on SIGINT - the last passed test isn't that valuable anymore). What failed is usually the most important info anyways. - @jamestalmage