Merge remote-tracking branch 'origin/develop' into develop
Changed Point2D to inherit Comparable
temp commit
end of 6/5
ClusterクラスにcompareToを実装
Implemented getVariation
temp commit
Added 3 tests and Implemented to get all green

test_AbleToAddCluster
test_AbleToAddDifferentInstanceOfCluster
test_DisableToAddSameInstanceOfCluster
applied formatter
passed test_AbleToUpdateCenterOfAllClusters
Passed test_AbleToCalcRootMeanSquare
Modified Cluster Class to use LinkedList instead of TreeSet
Implemented sort() method
Commented out unused test
Modified getDestinationOf()
On the way of implementing getDestinationOf()
On the way of implementing getDestinationOf()
Merge branch 'develop_refactering' of
https://github.com/satoh-disk/k-means.git into develop_refactering

Conflicts:
	src/main/java/jp/level_five/freshers/k_means/KMeans.java
on the way of working on office
on the way of working on home
Merge remote-tracking branch 'origin/develop_refactering' into
develop_refactering

Conflicts:
	src/main/java/jp/level_five/freshers/k_means/KMeans.java
	src/main/java/jp/level_five/freshers/k_means/KMeansData.java
Merge remote-tracking branch 'origin/develop_refactering' into
develop_refactering

Conflicts:
	src/main/java/jp/level_five/freshers/k_means/KMeans.java
	src/main/java/jp/level_five/freshers/k_means/KMeansData.java