Adding generic weight type to model 
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                 Key: SANDBOX-364
                 URL: https://issues.apache.org/jira/browse/SANDBOX-364
             Project: Commons Sandbox
          Issue Type: Improvement
          Components: Graph
            Reporter: Claudio Squarcella
            Priority: Minor
         Attachments: AddingGenericWeightTypeToModel.patch

Hello,

with this patch I introduce generic weight types in all the implementations of 
the domain (mainly classes in the {{model}} packages both in {{main}} and 
{{test}}). Consequently I updated tests and references to be fully generic.

One side effect is that {{WeightedEdge}} does not implement {{Comparable}} 
anymore, because that would imply passing it a {{Comparator}} for weights as an 
argument upon creation. Instead, without polluting {{WeightedEdge}}, I changed 
the classes where it was needed to be {{Comparable}} (e.g. in {{Kruskal}} there 
is a {{PriorityQueue}} that is now initialized with an appropriate 
{{Comparator}} instead of relying on {{Comparable}} edges).

All tests are green. Hoping to help :-)
Claudio

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