Tomas Aschan

I love this API idea, so I say do it! In the interest of keeping the API consistent, we probably want to make this style possible in other solvers, but...

This would probably also be interesting for creating a better solution to timholy/ProgressMeter.jl#15, so there are real use cases.

Now that both #59 and #61 are merged, this is probably a good time for this too, if you're up for it :)

Good point.

I took a quick look, and although I won't have time to prod deeper, at least on the surface it looks quite good to me. Do we have usage docs...

If we stop throwing errors for failed integrations, this is a _severely breaking change_ for users who rely on errors to inform them that the integration wasn't successful. To have...

Haven't had time to kick the tires, really, but this seems good. An adaptive AND symplectic method really does add value to the suite. I'll get back with more input...

I am, in principle, for it. The implementation seems fine by me too, although we should make sure that the kwarg is supported for all methods where it makes sense...

Perhaps the problem is, really, that we're using `Vector{typeof(y0)}` as a shortcut for having a true "solution type" such as `ODESolution{typeof(y0), }`. It might be worth considering adding a type...

Actually, some changes that made it into Julia 0.4 make it easier than ever to overload indexing; we only have to care about how indexing is handled for single elements,...