Update v104 — Drill Down Steam update #1583479

Update v104: + Added 6 new mid- to late-game machines + Added 2 new sciences + Added 18 new items + Added level seed input and display * Changed some of the mid- to late-game recipes of existing machines, changing and adding steps This means any affected buildings you already built will function as before, but new ones follow the new recipes & costs. In the long run you should migrate * Changed conveyor pathing to prefer straights over diagonals * Fixed a potential bug involved with save-game corruption * Fixed deleting a conveyor with items wouldn't send the items back to their origin * Fixed saving the game on a layer lower than -255 would break the save (thanks Cleric Preston) * Fixed placing a drill on a layer lower than -255 would break the save (thanks Cleric Preston) * Fixed duplicate layers being generated * Added copy error message button to error dialog * Massive performance im...