func newCluster() *cluster {
	result := new(cluster)
	result.Chunks = make([]*html.Chunk, 0)
	result.Scores = make([]float32, 0)
	result.Weights = make([]float32, 0)
	return result
}
newCluster creates and initalizes a new cluster.
package model
import (
	gonet "golang.org/x/net/html"
	"github.com/slyrz/newscat/html"
)
type clusterMap map[*gonet.Node]*cluster
type cluster struct {
	Chunks  []*html.Chunk
	Scores  []float32
	Weights []float32
	average float32  
	changed bool     
}