A patch release was just posted. You may see a notice that an update is available for your version - if you see this, re-download and re-install it.
This patch fixes an issue in the sharing system that could cause a crash if you loaded a file, edited nodes on a shape, then undid all your changes, and re-saved. Since it could also crash when auto-saving, it is likely the cause of a number of seemingly random crashes, so we're very happy to have this one fixed.
This is the only change for this patch.