I see that the latest official Heaps version is Heaps 1.9.0 which was released quite some time ago. This seems to me a reason not to choose it as my game engine due to the seemingly lack of active participation.
However, looking at the current state it seems fairly stable and quite good compared to other game engines I have been evaluating so far.
Should I be worried by the lack of progress, or can someone post a good argument to convine me to choose Heaps as my game engine of choice?