add sounds to bulls and cows

Merge pull request #10 from berengma/dev

add sounds for bulls and cows

fix spawn and find_food

Merge pull request #9 from berengma/dev

Dev

knockback and Do NOT mess with MAMA

Merge pull request #8 from berengma/dev

knockback and dnmwM

pathfinding updates

adjust collission boxes so animals can pass by open doors if pathfinder tells so

fix globals, smarter bulls, better spawn

Merge pull request #6 from berengma/dev

fix global, smarter bulls, better spawn

new spawn and faster pathfinding

Merge pull request #5 from berengma/dev

Dev

aurochses

first playable version
disabled debug and added screenshot