File information object
Added a FileInfo object. This object can be used to determine information about a file
like whether it's present, readable, etc. Strings have a new property 'asFileName' that
answer a FileName object. FileName objects have a new property called 'FileInfo' which answers
a FileInfo (unless the named file doesn't exist, in which case you get <null>). See the
documentation to find out about FileInfo's properties.
Message chains in subexpressions
Fixed a bug that made message chains (multiple properties separated by '.') illegal in
subexpressions (i.e., expressions inside &()). For
example: &((name = ps)); didn't
work, but now does.
Added support for reading files with Macintosh and Unix line-terminators.