There are more than enough bugs to go around in the NuHabitat beta that officially went live yesterday, but the brand-new real-estate listings website does have one killer feature with the potential to shake up Houston’s real-estate landscape. To registered users, NuHabitat coughs up a set of details that until now were available only to real estate agents: date-by-date, blow-by-blow pricing histories for listed properties — even if the MLS numbers have changed. With these little kittens wandering out of the bag, there aren’t a whole lot of top-secret MLS data fields left to the exclusive domain of real-estate agents.