It is not possible to build a trainer like other trainers before the current game version because developers are now using shared unit structures and a lot of sub classes which makes filtering out player only nearly impossible. In fact the game has inbuilt cheats, unlocking them is not only the best solution, it also makes the trainer very stable for future versions unless developers remove these cheats.
Perhaps if I have some time I can look into a way to add a quantity option but as every game patches now because of winter sale (and not only once) I have spare time.
Apparently it's possible to make a trainer for v0.9. I resently found one on GameCopyWold that works, by the name of Planet Explorers 64bit V0.9 Trainer +8, the only finicky thing about it is that you need to turn off all trainer options before reloading a save and turn them back on after you are in game again.
[Edited by ShadowWalker999, 1/30/2016 3:08:55 AM]