List of Cluster sizes in json file do not match with cluster IDs in the List of Nodes.

[MikePone]

In previous versions (hivclustering (1.3.2)), the Nodes listed under cluster 1 would always correspond to the first cluster size in the list of cluster sizes, nodes under cluster 2 would correspond to the second cluster size in the Cluster Sizes list, etc. I could reliably obtain the cluster sizes without having to count the nodes myself by accessing the cluster sizes index directly.
In the latest version, this does not hold true.