add new feature: online clustering with coreset
Add Eigen to source tree
Use internal Eigen
Add MPL2 license for Eigen
Add notes about third-party libraries included in Jubatus
Fix typedef and include guard in clustering and  cluster_analysis
Merge pull request #522 from hido/fix_cluster_type_and_include_guard

Fix typedef and include guard in clustering and cluster_analysis
Merge develop & fix clustering & clusteranalysis idl files
Merge latest develop
Stop Travis to install Eigen
Remove eigen3 dependency from wscript
Merge branch 'include-eigen' into feature/coreset
Merge branch 'develop' into feature/coreset
regenerated with jubatus/develop
Merge branch 'include-eigen' into feature/coreset
Fix third-party License note
Remove eigen3 dependency
Remove cluster_analysis
Merge pull request #500 from jubatus/feature/coreset

*New Feature* Online clustering in Jubatus!