0.5.8 - A fix for keyboard shortcuts with Chinese Text input

We are still working on the month’s major update - sandbox mode - but as that is at least a week away, we are pushing this small patch to solve the problems with keyboard shortcuts for users who boot Iron Roads with an Input Method Editor enabled, for example those using Chinese text input methods.

Other minor changes in this patch:

• There is a fix for a bug that caused memory usage to grow over time
  
• We have fixed the routes board so that it no longer clips the info button of routes on the right hand side
  
• We have also updated the route displays so that error messages are no longer occluded by that info button!
  

Thanks to you all for your feedback, and we look forward to sharing the new sandbox mode with you soon!