Follow symlinks in content (fixes nanoc/nanoc#212)
Add test case for symlinks to files
Move #all_files_in to new FilesystemTools module
Handle symlinks to files correctly
Do not resolve symlink names (necessary for identifier building)
Expand symlinks correctly
Resolve symlinks in static data source
Resolve symlinks to symlinks
Raise error when directory symlink recursion limit is reached
Be more strict about supported file types
Document UnsupportedFileTypeError
Fix broken reference to MaxSymlinkDepthExceededError in documentation
Merge pull request #302 from ddfreyne/bug-follow-symlinks-in-content

Follow symlinks in the content directory
Update release notes for 3.6.3