Search directory bug fixes

This release was solely focused on patching up Search Directory. It is now more robust, reliable, and predictable than ever! Big thanks to @kidonng for finding all 4 of these bugs and starting the fixes!

• Properly show symlink info in file previews (#159)
• Previews when base dir contains spaces (patch 3) (#161)
• Previewing symlinks containing spaces (#164)
• Specifying base directories using quotes (#163)