devnotes.txt: Added. Contains relevant notes taken throughout the
development process (e.g. possible features, major changes, other
ideas).

DetectionTask.java: Added. Started implementing the duplicate file
detection task as a SwingWorker thread.

OptionsContainer.java: Removed. Settings and options are now defined and
passed by a SettingsContainer object.

IndexingSettingsContainer.java: Renamed to SettingsContainer.java.

com.doetsch.dupespot.util: Contains helper classes for this application;

FileHasher.java: Added. Generates MD5 file hashes.

FileIndex.java: Added. Represents the file contents of a file-system
folder.

HashableFile.java: Added. An extention of java.io.File. Contains an
additional property, hash, representing the hash value of the
encapsulated file.

KeyvaluePair.java: Moved from com.doetsch.dupespot