Make sure carriage returns aren't normalized

Carriage returns were being normalized to newlines and causing the
spec to fail. Added a new spec that tests replace carriage returns in
a file containing carriage returns.
Reword spec
Prepare 0.93.0 release
Add follow-symbolic-link button

Default to false
It needs additional patch for `project.js` as following:
https://gist.github.com/norio-nomura/9757918