scalameter PrimitivePickler for generic use cases

Point.scala

case class Point(x: Double, y: Double)

PointPickler.scala

final class PointPickler extends PrimitivePickler[Point] {
  override protected def bits: Int = java.lang.Double.SIZE * 2
  override protected def unwrap(from: ByteBuffer): Point = Point(from.getDouble, from.getDouble)
  override def pickle(x: Point): Array[Byte] = byteBuffer.putDouble(x.x).putDouble(x.y).array()
}