Unstable release 0.9.9 (beta) — Endless Sky Steam update #846147

0.9.9 is now live for anyone who has opted into the beta branch. This is an unstable release incorporating a year and a half of changes, including: Significant graphics and physics engine optimizations. Cloaked ships can now be hit by projectiles. Turrets turn slower, allowing fast ships to dodge them more easily. Ramscoop and solar power effectiveness now varies from star to star. New Remnant ships, outfits, and missions. Purchasing a Bactrian now requires completing a mission string. Added an "asteroid scanner" that lets you target minable asteroids. Experimental "news" feature in the spaceport. All ship sprites re-rendered with a more dramatic lighting angle. The shipyard now shows an angled view of each ship instead of top-down. There are many other changes, as well. For a complete list, see the changelog. Special thanks to @tehhowch, @Amazinite, and @Pointedstick for managing this r...