Add version 0.8.6 of Amethyst
Update amethyst page with updated version.
Merge branch 'source' of github.com:ianyh/ianyh.github.io into source

* 'source' of github.com:ianyh/ianyh.github.io:
  Add new version of 0.9
  Fix 0.9 length
  Update amethyst page to 0.9
  Add version 0.9 of Amethyst

Conflicts:
	source/_includes/amethyst_header.html
	source/amethyst/appcast.xml
	source/amethyst/index.markdown
Remove 0.9 for now