v17-pre8, v17-pre9 — Puffin Planes Steam update #891191

I think that this new update is in a pretty good place. Big thanks to everyone on Steam and especially in the Discord who has provided a lot of feedback on how to polish the new plane ordering mechanics. Hopefully this is a step in the right direction. If everything looks good, I will just do a few small tweaks and bugfixes and have the Puffin Planes Planes Update Part 1 out sometime in May. v17-pre9 Changes: - The "production line" concept has been partially split off into the "orders" concept. - You can now only order the latest block of a given plane. - Older blocks will be "retired" after all outstanding orders have been completed. - Manufacturers will prioritize finishing outstanding orders for older blocks before moving on to newer ones. - Removed the priority queue, replacing it with a new 'Priority Deal' mec...