v0.3.1

PiCode v0.3.1

Fixed

• The tray reopens the shell again. Closing the shell window destroyed it
  instead of hiding it, so tray click and Open PiCode silently did
  nothing. Close now hides the window; reopening returns to the same page.
• No more console window beside the shell. The shell built as a console
  app, so every start opened a terminal window titled with the exe path that
  lived as long as the tray icon. It now builds as a GUI app (debug builds
  keep the console).