[ibash]

This changes equalization so it only counts children oriented in the same direction.

This makes splits a bit more aesthetic, and replicates how split equalization works in neovim.

This is how splits look before this change:

Notice how the left pane gets squeezed.

Before equalization

After equalization

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And here's how the equalization works after this change:

Before equalization

After equalization

For many splits it looks much more aesthetic:

[mitchellh]

Thanks, this behaves a lot more like other applications with splits so this feels good to me. We should plan on migrating this work to GTK too.