Indefinitely Upgradeable Devices

This mod adds (semi-) indefinitely upgradeable devices. This includes: Vanilla: - Mine - Turbine - Metal Store - Battery - Sandbags - Repair Station Tanya's Mod: - Antigravity Reactor - Tanya - Derrick Generator Mod: - Generator - Geothermal Generator happy grinding COPYING INFO: Since this is a non trivial mod, copying/modifying any part of this mod is only allowed, if i grant you permission to do so. Update #1: reduced prices and upgrade-times Update #2: Fixed battery Reduced total amount of upgrades for better performance supermine/superturbine now upgradable Update #3: Possibly fixed lobby crash when downloading from lobby (too long displayname) added item descriptions, so you know which level you are at Update #4: Fixed crash when reaching the final upgrade Added sprites for every upgrade :3 Removed note about designing sprites for every upgrade being insane Upgate #5: Added Upgrades toTanya's devices