Send newline to REPL socket if return entered.
Send newline to REPL socket if return entered.

Fixes #168

mfikes/planck,mfikes/planck,mfikes/planck,ericstewart/planck,ericstewart/planck,ericstewart/planck,slipset/planck,slipset/planck,mnespor/planck,mnespor/planck,slipset/planck,mfikes/planck,slipset/planck,mfikes/planck,mnespor/planck,mfikes/planck,slipset/planck