v0.2.56 Update — Steam Engine Simulator Steam update #400841

This update adds a few minor improvements to the game and tutorial. Change List CPU check is completed at the beginning of the program so players know if their CPU is compatible or not. This is really just a check for AVX support which is supported on most CPUs made after 2011. Added more decimal places to transmission readout. Adjusted tutorial letter to specifically say "BOILER STRUCTURE" repair so that it correlates directly with a heading in the marketplace. Player now gets a notification if they try to click on a control that they currently don't have access to. Mailbox and marketplace are highlighted with arrows during the tutorial so players can find them more easily. Arrows were added to help players find where to click when repairing the powerlines for the first time.