use_ok tasks

[Michael G Schwern]

I've cut three tasks related to the use_ok() discussion, should people be
interested in doing some small work to that end.

Revert use_ok() back to its 0.98 features
https://github.com/schwern/test-more/issues/287

Discourage use_ok() in the docs
https://github.com/schwern/test-more/issues/288

Add test_history() to Test::More to access the History object
(this makes it much easier to bail on fail)
https://github.com/schwern/test-more/issues/286