Update jscs-jsdoc
Remove superfluous escaped full-stops from fixtures
Remove escape from dots when not preceded by a digit
Remove escape from exclamation-marks
Merge branch 'feature/stringification/less-escaped-characters'
Add fixtures for stringification of inline- and reference-style links
Add tests for incorrect reference link options
Add tests for incorrect setext header options
Add support for stringification with reference link options
Add documentation for stringification with reference link options
Merge branch 'feature/stringification/preferred-link-style'

Closes GH-6.