Miscellanous updates

- Added the VisIncr plugin. I took it out a while ago, but missed it.
- Added some searches for unicode ⇒ thanks to http://stackoverflow.com/questions/20845184/having-f-move-to-either-or
- Took the safety net out - i.e. no backup or swap files
- Cleaned up the scala case class snippet
- Added some special handling for markdown files