Ship speed bug IMPLEMENTED

[phoenixffyrnig]

One for the eyes of @Endru1241 I believe.

We don't seem to be getting +2 for ship speed since the last update. Even though both techs are researched, new build ships and newly trained ships are both coming through with +1 speed - pre existing ships maintain +2.

This is happening across the lines, transports, galley and trireme lines, siege ships, galleons, and I have confirmed this with 4 other players so far. I cannot yet confirm if researching both upgrades in a newer game has this problem also.

[Endru1241]

Good find.
It turned out Navigation tech is missing TECH_IS_PROP_CHANGER spec, so it's not applied to new units.
I'll fix it, when I'll get home.