how can I set config for additional-packages?

I am trying to configure this https://atom.io/packages/center-screen

also, it would be great if the config is misformed with errors, instead of freezing the whole editor up to the point where i have to quit through OS commands, instead would just get the default atom stuff

like as it is with spacemacs

yeah, that package is abandoned 😞

@ashnur: it should give you a cljs error and not freeze the editor

not a well formed error but still