V 5.6.0 Creatures on large lakes

Release notes for sprint 5.6.0

Creatures seek out the Angler

Creature to defend an area of the Lake

Creature search for Angler when Hungry

Creature to avoid structures when patrolling

Creature pass through all hexes starving following food

Creature allowed to enter structures when following Food

Creature to keep following if gaining ground on food

Large Lily Pads unfishable because defended by 5 creatures

Assorted bug fixes