Sublime has this cool feature where you can create a new file (or modify an existing one) and close the text editor without having to explicitly save the modifications.
Next time the editor is opened, the unsaved modifications will still be there.
Is there a way to mimic this behaviour in atom?
This sublime feature is called hot exit. Although atom doesn't has this feature this package claims to implement it.
Note: I haven't tested it, so I don't know if it really works; be careful in order to avoid losing your work.