[feature] Timing Information.

[postmodern]

It might be useful to record the time it took to print individual lines of output. This could be used to "play-back" the tests, to identify oddly slow tests.

[erikh]

we don't actually capture by line, we capture by character in some situations and by line in others. this can make timing kind of hard.

Still, I'll keep this open if it makes sense later, we may be integrating something that may make this possible