I made a fix which adds resizable panes. It's a temporary fix that should work until they add them into core, but for now, here you go: https://github.com/pitaj/atom-resize-panes/
IMHO, atom is the superior editor
I've tried Atom twice and both times I found it to have this slight lag while I type. Drives me nuts. Maybe its not that great on windows I guess
I read that they fixed the speed issues on Atom after changing the technologies they were using to write it, but on Arch Linux so far it still seems to still have a lag. I tried it on Windows and it runs pretty well and is actually usable.
+1 for no paywall
-1 for poor Linux support
emacs doesn't have paywall either 
