I second @Zhong_Pan, LSP setup with Julia following the official guide setup is seamless, as is the SendCode integration between ST3 and Julia (thanks a lot @PetrKryslUCSD for the step-by-step intro and to @randy3k for the packages). One big advantage of this settings vs Atom is that in ST3 the Julia REPL need not be docked in the text editor, which is something I had been after for months.
One question on LSP + julia: on top of the features listed above and in the LSP documentation, it would be really nice to have autocompletion of Julia functions (from Base or any loaded package), something that Atom has. How complicated would that be? (Not an expert at all, so apologies if the question makes little sense)