geohash.go
func NeighborIntWithPrecision(hash uint64, bits uint, direction Direction) uint64 {
	return NeighborsIntWithPrecision(hash, bits)[direction]
}
func NeighborIntWithPrecision(hash uint64, bits uint, direction Direction) uint64 {
	return NeighborsIntWithPrecision(hash, bits)[direction]
}
// NeighborIntWithPrecision returns a uint64s that corresponds to the
// provided hash's neighbor in the provided direction at the given precision.