Call register_label when train method does not change state of storage, and return labels whose scores are zero
Remove code for benchmark
Remove csize_t
Use std::abs instead of ::abs : fix #663
Reformat clustering
Fix code style
Make inp method pure virtual
Merge pull request #664 from jubatus/remove-abs

Use std::abs instead of ::abs : fix #663
Add labels to stub_storage to maintain all labels
Fixed wrong indentation
Merge branch 'develop' into return-zero-labels

Conflicts:
	jubatus/core/driver/linear_function_mixer_test.cpp
	jubatus/core/storage/storage_test.cpp
fix IDL code format for automatic validation (ref #175)
add `version.hpp` to intall files for issue #666
Merge pull request #674 from jubatus/add_version_hpp_to_install_files

add `version.hpp` to intall files for issue #666
Merge pull request #670 from jubatus/return-zero-labels

Return zero labels
Merge branch 'develop' into feature/test_clustering_driver
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