Added tooltip to button.
Changed Clear All button to clear log entries only.
i.e. Not the loggers themselves.
Added DataLogger.setRecording() to specify whether to record log entries.
Added play/pause recording option.
Added Icons class.
Added caching of loaded icons.
Added record/pause icons.
Added add & remove icons.
Added hide, about and zedlog icons.
Changed default window size for ZedLogFrame.