record any Counters from the pregelix job as part of STATS
add cmdline option `-runAllStats` to insert STATS between all jobs
add test for union update of vkmerlist
fix bug of unionUpdate() of vkmerList
use assert in test case for testUnionUpdate
complicated test
remove ray dependence on old scaffolding aggregator
bugfix for P4: newEdge unused and outgoingMsg not properly reset for updates
modify complicate test
perfect test for UnionUpdate() for vKmerList
Merge pull request #84 from uci-cbcl/nanzhang/TestUUpdate_VkmerList

add test for union update of vkmerlist
WIP
Merge branch 'genomix/fullstack_genomix' into anbangx/clean-code
Merge pull request #83 from uci-cbcl/anbangx/clean-code

Anbangx/clean code
Merge branch 'genomix/fullstack_genomix' into anbangx/add-bubble-merge-statistics
Add statistics distribution
move edgelist to bubblevertex
Merge remote-tracking branch 'origin/genomix/fullstack_genomix' into wbiesing/bugfix-for-p4

Conflicts:
	genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/operator/scaffolding/RayVertex.java
Merge pull request #85 from uci-cbcl/wbiesing/bugfix-for-p4

Wbiesing/bugfix for p4
Merge remote-tracking branch 'origin/genomix/fullstack_genomix' into wbiesing/record-counters-from-pregelix-jobs-in-stats

Conflicts:
	genomix/genomix-
hadoop/src/main/java/edu/uci/ics/genomix/hadoop/utils/GraphStatistics.java