~ Install - Starbound Nightly, and keep your Stable release:
1 - Goto: C:/Program Files (x86)/Steam/SteamApps/common/
2 - Rename Starbound
to StarboundEK
3 - Open Steam, go into your Library, right click Starbound
, click Properties
4 - Goto the Beta
tab, and from the dropdown menu, select Nightly
& wait for this to download.