Specify version for components defined using `defco`

[leMaik]

We're going to allow specifying Buggy components using Lisgy and we need to assign versions to them.

@LittleHelicase showed me that there already is a syntax to select a version of a component when using it (i.e. (math/add 40 2 {:version 1.0.0})).

At the moment, there doesn't seem to be a way to specify the version of a component when using defco. Maybe it could use the same syntax? Like (defco inc [x] (math/add x 1) {:version 1.0.0})?