Ver 0.10.0

Changed: import datafmt.xml => marshal.xml
Changed: import datafmt.json => marshal.json
Changed: import datafmt.markdown => markdown
Added: dir('/path/to/directory')
Added: glob('*/*.txt')
Added: function.call([1, 2]) same as function(1, 2)
Fixed: XMLNode#to_str('html pretty') crushes
Fixed: b64decode crushes