fix(css): search box height issue on chrome 71 (ppoffice#721)

fix(style): wrap all words in article content

fix(schema): move search schemas to npm dep

chore: merge changes from master branch

chore: update package version

fix(ci): fix travis ci release job

Merge branch 'master' into dev

Add Utterances comment system (ppoffice#625)

fix(layout): code block caption bar on safari

chore: merge master