Sailors of the Sky Gold v6.01 Patch

This release updates v2.87 and v4.63 to v6.01 and implements voice communication along with a few other changes.
Thorough revised version. It includes voice intercommunication. Press "Tab" to transmit. You have to set it in the Configuration window first. You can return to text mode pressing Ctrl+Tab when on flight. Adicionally in previous patch: 1. New