Cell output not shown in top-down order

[darsnack]

According to the docs, cells that share a namespace are evaluated in top-down order. But it doesn't seem like the output matches this. Specifically, I have the following:

First cell:

{cell=namespace-A}
```julia
# some code
foo # show(foo) is the output of this cell
```

Second cell:
{cell=namespace-A}
```julia
# some code that mutates foo
foo # show(foo) is the output of this cell
```

The output of the first cell is affected by the second cell.

[MichaelHatherly]

Looks like it's probably https://github.com/MichaelHatherly/Publish.jl/blob/master/src/cells.jl#L59 where a reference to the value of a cell is stored in the AST for later display, so all cells get evaluated prior to calling show on the stored values, which surfaces the mutability you're seeing there.