Steam Sky version 4.0.7 is available

This release brings only fixed bugs for stable release. Binaries are available for Linux and Windows (both 64-bit). For more info how to use AppImage on Linux, please see: https://docs.appimage.org/user-guide/run-appimages.html. Below are changes since the last stable release:

Changed

• Updated README.md

Fixed

• Crash during hiring new crew members in bases (issue #49)
• Crash when trying to sell medicines to diseased base with full cargo (issue
  #49)
• Hide orders menu when moving ship (issue #49)
• Not working Close button in combat when you enter any other info screen
  (issue #49)
• Crash on map after selling last engine