Merge pull request #92 from kato1628/feature/fix-json-file

[fix] end drop logic. #87

Merge pull request #92 from kato1628/feature/fix-json-file

[fix] end drop logic. #87

Merge pull request #91 from kato1628/feature/fix-howto

[fix] count task of Howto Contents. #90

Merge pull request #86 from kato1628/feature/carry-over

Feature/carry over

Merge pull request #78 from kato1628/develop

v0.0.6 Merge develop

Merge pull request #78 from kato1628/develop

v0.0.6 Merge develop

Merge pull request #72 from kato1628/develop

bug fix.

Merge pull request #68 from kato1628/develop

[change] download url.

Merge pull request #64 from kato1628/develop

merge develop

Merge pull request #60 from kato1628/develop

merge Develop