Bump up version to 0.7.1 (lindera#17)

* Bump up version to 0.7.1

* Update CHANGES.md

Bump up version to 0.7.0 (lindera#14)

* Bump up version to 0.7.0

* Update CHANGES.md

Bump up version to 0.6.0 (lindera#12)

* Bump up version to 0.6.0

* Update CHANGES.md

* Update CHANGES.md

Update CHANGES.md

Update CHANGES.md

Update CHANGES.md

Update CHANGES.md

Rename project