failure

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I spent a good chunk of last year moving my crate projects error handling over to error chain to be consistent and to play nice with the emerging community of error chain compatible crates. I've been pretty happy with it.

A year later I'm debating if I should invest the same amount of time converting all the error handling in my crates to use the failure or if I should wait and see.

There is a note in this projects readme that may help push me over the edge

new system based on lessons learned over the past several years, including those learned from experience with quick-error and error-chain.

So far I'm been happy with error chain. Rather than just converting everything just for the sake of switching to a newer thing, I and others may find it helpful to know what those lessons you learned actually were.

Would it be possible to enumerate those lessons learned in this project's readme so other crate maintainers could get a better sense for what they are improving on before making the refactor?