Enable license activation via license file on a dongle

The release of SNH version 1.19.19 enables you to store the license key needed to launch the program on the dongle that belongs to the key. This eliminates the need to enter the key when SNH is started for the first time.

To do this, the key(s) must be saved row-by-row in a text file named “licence.dat” in the dongle’s root directory. The user listed under SNH must receive read permission for the USB dongle.