Version bump to 0.6.0
Version bump to 0.6.0

suzuki/review,orangain/review,takahashim/review,kmuto/review,murashitas/review,masawada/review,kuad9/review_study,krororo/review,suzuki/review,murashitas/review,kuad9/review_study,orangain/review,takahashim/review,krororo/review,kmuto/review,kdmsnr/review,kmuto/review,krororo/review,masawada/review