Smarter operators investigation

[lakatop]

Investigate and come up with smarter operators (mut/cross/fit) that makes more sense

• 2 paths that go into opposite directions and are both good - cross doesnt make sense
• Mutation could slowly lower the pace of agent, and all parts of path after the destination should have 0 velocity
• Fitness shouldnt be so strict - come up with smarter penalisation and dont throw away the whole path just because there is some collision