Revert "Add CHANGELOG.md to the distribution package"
Revert "Add CHANGELOG.md to the distribution package"

This reverts commit cdb1a0e91ac33d99614495535398703e1ea4fd2c.

vivliostyle/vivliostyle-ui,vivliostyle/vivliostyle-ui,vivliostyle/vivliostyle.js,vivliostyle/vivliostyle-ui,vivliostyle/vivliostyle-ui,vivliostyle/vivliostyle.js,vivliostyle/vivliostyle.js,vivliostyle/vivliostyle.js