the current version (main branch, template #2) supports 1.5, but 1.6 is completely unsupported at the moment (is that right PMB?), template #2 i find isnt very stable though (the bots on my version dont move or do anything after the first round), but you might like to try template #1, that MIGHT work fine (i havent tried it)

if you have version 1.3 you can play the "secondary branch", which is very stable but old