Given a spec return a map of similar structure replacing it's values with
derived atoms built based on the depedency information encoded in the spec

WARNING: This will create derived atoms for all keys so it may lead
to some uneccesary computations To avoid this issue consider using
`derivatives-pool` which manages derivatives in a registry
removing them as soon as they become unused

Calculate all dependencies for `ks` and return a set with the dependencies and `ks`

Variation of `depend` that takes a list of dependencies instead of one

Given a derivatives spec return a map with `get!` and `free!` functions.

- (get! derivative-id token) will retrieve a derivative for
  `derivative-id` registering the usage with `token`
- (free! derivative-id token) will indicate the derivative `derivative-id`
  is no longer needed by `token`, if there are no more tokens needing
  the derivative it will be removed

Rum mixin to retrieve derivatives for `drv-ks` using the functions in the component context
To get the derived-atom use `get-ref` for swappable client/server behavior

Get the derivative identified by `drv-k` from the component state.
When rendering in Clojure this looks for `drv-k` in the dynvar `*derivatives`

Like `get-ref` wrapped in `rum.core/react`

React to multiple derivatives in the components state.
If any `ks` are passed, react to those and return their values
in a map. If no `ks` is passed return all available derivatives
deref'ed as a map.

Given the passed spec add get!/release! derivative functions to
the child context so they can be seen by components using the `deriv`
mixin.

Like rum-derivatives but get the spec from the arguments passed to the components (`:rum/args`) using `get-spec-fn`

Turn a given spec into a dependency graph

Update the derivatives map `drv-map` so that all keys passed in `order`
are statisfied and any superfluous keys are removed.
Values of superfluous keys that implement IDisposable they will also be disposed.

Platform-agnostic helper to determine if something is watchable (atom, etc)