Post-Sprint melee should be more dangerous

[janxious]

[7:22 PM] jo: @LadyAlekto what was this about melee mover?
[7:22 PM] LadyAlekto: Id like to nerf the sprint melee
[7:23 PM] LadyAlekto: by either restricitng it to ace pilot, or giving it self damage and penaltys, or both

https://github.com/Morphyum/MeleeMover for code to enable spring->attack.