Welcome to the retooled version of iLounge’s mini-app roundup column “Weird and Small Apps,” which we’ve titled Small Apps + Updates. In this recurring column, we’ll take brief looks at noteworthy small apps and games, as well as offering quick second takes on updated versions of titles we’ve previously covered. The top picks in this roundup are Solar Walk and Wheels on the Bus HD. Read on for all the details. CameraBag…