track_create, _update, and _delete should all be true by default

[johnnyshields]

I propose that track_create, _update, and _delete should all be true by default. I believe this is the standard use case 80% of the time.

Currently it's:

            track_create: false,
            track_update: true,
            track_destroy: false

This would entail a minor version bump.

[dblock]

I'm down with this, it has always annoyed me that somehow creates and destroys would not be tracked by default. I wonder whether we should talk about this syntax in general, too. Some other proposals I've heard of before included things like this:

track: { methods: [ :create, :update, :destroy, :some_method_that_changes_things ], ... }

[johnnyshields]

I'll raise a PR for my version above, because it's the path of least resistance. Am neutral on the track: {methods: [...]} proposal.