Update dependencies
Replace Express with Connect
Merge branch 'hotfix/front-matter' into dev
fix auto_spacing filter: use pangunode instead. Fix #631
https://github.com/huei90/pangu.node
open_graph helper: allow multiple images
Update dependencies
Refactor external_link filter with cheerio
Merge branch 'feature/connect-3x' into dev

Conflicts:
	package.json
server: decodeURIComponent
Merge branch 'master' into dev
2.6.1 released
Merge branch 'dev'
fix files can't be processed after error occurred
Fix HTML is encoded into XML entities. Fix #657
Fix YAML front-matter parsing error. Fix #659
2.6.2 released
Merge branch 'dev'