This one is mostly a quick release to get a fix to some recent memory/performance problems out along with an advanced setting slider to help players directly experiencing those problems see if the sprite-pooling (or lack thereof) really is the cause.
Also a significant rework to the Spire Archive, which won the most recent "Worst Unit" poll. We'll be dealing with the other winners from that poll and the two nerf polls soon too, but we wanted to get that sprite pooling thing out sooner than later so we can get feedback and see what else needs to be done on that side of things. There's a couple miscellaneous changes in there too, and if you like Zenith Electric Bombers you'll like that they're now immune to instakill (Ion Cannons = Now Sad).
Update: 5.048 just removes an optimization in 5.047 that was causing something very like a memory leak. Sorry about the goof there.
Update: 5.049 fixes a problem with the new Spire Archive seeding logic where it was trying to put them on invalid planets (rather, planets that would be valid later but weren't at that point in the process). This would cause starting a game to fail when it happened, so wanted to get the fix out now.
This is a standard update that you can download through the in-game updater itself, if you already have 4.000 or later. When you launch the game, you'll see the notice of the update having been found if you're connected to the Internet at the time. If you don't have 4.000 or later, you can download that here.