Overweight elephants

[mickmca]

In the Sierra scenario, elephants can't cross or go around the mountains. I see the logic here, but it's extremely frustrating to build the one (Persian) elephant hatchery allowed, spend 10 million metal (it seems) to get five elephants, only to have them wander aimlessly along the massif.

[elexis]

Fixed next release by putting all elephants, siege engines and ships on a strict diet.

See the screenshots https://code.wildfiregames.com/D253#9665

And if the passage is too small (alpha 21), you have to take ships.