Feature request: Debug weight keyword

[tien-vo-xuan]

I would like to see this feature.

Sample usage:
java -jar graphwalker.jar offline -g RANDOM -f model/ -s TEST_LENGTH=1000 -w -d WEIGHT:v_Vertex

Output:
...
e_A: 23.15%
e_B: 70.85%
e_C: 6%

-d: debug