Add support for SASS and SCSS
Remove C-x j, there is M-^ already
Improve line killing

Based on http://emacsredux.com/blog/2013/04/08/kill-line-backward/ and
http://emacsredux.com/blog/2013/04/09/kill-whole-line/.
Enable drag-stuff for line moving
Move functions into a library file
Add smart line opening