Function for selecting a target

[ShiriB]

Gets the vector of targets, decides which one we should shoot at.
Sort targets array by Y value, look for the highest target.

Option to try once we're done with everything else: turn LEDs off, take one picture, turn them back on. Get the targets from that picture and delete any targets that show up in both vectors from the original one- this should eliminate any of the lighting that passes as a target.

[StevenLW]

Me and Revanth will try to work on this

[StevenLW]

...that wasn't supposed to be italicized. It was more like we will [try] to work on it.