Added rel="next/prev" for links in paginator
Merge pull request #638 from arkasha69/fix/rel

Added rel="next/prev" for links in paginator
util.yfm: fix parsing bug with inline separator #636
post.create: wrap title with quotations #636
Merge branch 'hotfix/front-matter'
Escape slugs for tags and categories, honor filename_case setting.
Fix util.escape.filename which used to change filename to lowercase forcibly
Merge pull request #644 from vlevit/hotfix/escape-slug

Escape slugs for tags and categories, honor filename_case setting