DefinitionsDocument so that they exploit fast Swing mapping from
offset to paragraph. Revised the caretUpdate method in the
position listener in MainFrame so that is uses caret position rather
than document location (which caused a minor bug in updating
the displayed location). Revised the commenting for SwingWorker.java.
The following files were modified:
M src/edu/rice/cs/drjava/model/definitions/DefinitionsDocument.java
M src/edu/rice/cs/drjava/ui/MainFrame.java
M src/edu/rice/cs/util/swing/SwingWorker.java