Iris Release Notes

    - Accepts load.sed SAMP requests (from SedImporter or any other
      SAMP-enabled app capable of delivering this request).

    - Quantity (flux density / flux) selector was added; units
      selector is contextual now.

    - Reads SED files with no errors present.

    - Help menu accesses the Iris how-to web page.

    - Removed counts/sec/pixel units from units selector.

    - Prevents error array to be shipped to Sherpa for fitting.

    - Only the sub-set of user preferences that is relevant for Iris
      shows up on the preferences editor.

    - Updated preferences menu.
 

    - Fit parameter editors do not cause unnecessary display
      flickering anymore.

    - Plot title is preserved when re-plotting.

    - Fixed logic in log/linear selection for residuals plot.

    - Fixed CPU bottleneck that impaired building metadata table.

    - Fixed bug related to non-existent remote SED files.

    - Fixed bug that prevented Iris from starting from a directory
      specified in the command line.

    - Fixed bug that caused invalid internal state when using
      secondary windows and a fitting is taking place simultaneously.
    

    - The Iris blackbody model no longer expects a certain
      subset of spectral coordinates.

    - If the user creates an external SAMP hub and then starts Iris,
      Specview and Sherpa will use this hub to communicate. If the
      external hub is shutdown and restarted, Specview and Sherpa will
      reconnect automatically. This bug fix enables Sherpa to
      automatically connect to a running hub.
     

Enhancements

    - SedImporter now starts a hub if it can't find one running.

    - Unless this feature is disabled by the user using a menu item, a
      new hub is started whenever SedImporter detects that there is no
      hub running. This way even if an application that started a hub
      shuts it down, a new hub will be available to Iris.

    - SedImporter can now broadcast SED files, using an internal web
      server.

    - The SAMP listening mechanism has been changed to be more
      flexible. If a table is received and no SEDs are currently
      active a new SED will be created.

    - Each SED window has a checkbox for receiving SAMP tables: the
      table will be sent only to the SEDs with a ticked checkbox.
    

    - Segments can now be edited, if they have been imported. NED
      segments can't be edited.

    - Segments received through SAMP can be shared among SEDs. If they
      are edited, the changes will reflect on all the SEDs that
      contain the segment.

    - Segments coordinates are now formatted.

    - Added multitable support: more than one segment can be imported
      for each file (works natively for FITS and VOTABLE, but custom
      filters can be written to support multiple tables in files).

    - Added support for Unknown error. The output will be a file with
      no error column.

    - Removed unsupported options for asymmetric errors.
   

    - Integrated support for dynamically loaded file filters
      (plugins). A GUI Plugin Manager allows to load and remove
      plugins (jars), and to display Plugin information. Plugins are
      installed in a hidden directory in the user's home directory
      (.vao/iris/importer/plugins). Each plugin can contain an
      arbitrary number of custom filters.

    - Some internal refactoring leads to improved efficiency in the
      filters framework. 

    - The local cache of filters is now driven by URLs so that an
      instance of the filter is kept in memory for each file.

    - In the STIL based native filters, the DataSource is determined
      dynamically to leverage STIL performance capabilities when
      mapping some files (e.g. binary FITS).

    - SedImporter can now read compliant files.
    

    - SedImporter hosts the Smoke Test for the Iris suite:

      a. The Smoke Test simulates a user session and the underlying SAMP
         conversation.

      b. Where possible, the GUI interaction is directly simulated, even
         though the GUI is never actually shown.

      c. As a by-product, the SedImporter now hosts a basic Java
         Sherpa API, based on a type-safe framework for representing
         arbitrary objects as SAMP messages. 

      d. The Smoke Test also probes the host OS and architecture and
         warns the user that he/she has installed a mismatching package.
    

    - Removed a workaround due to a bug that has been fixed by the NED
      service.

    - Changed SedLib version to 1.0.

    - Introduced FLUX as a quantity (vF(v)).

    - Removed the "SPV" prefix to quantity names. 

    - On Mac systems the menu bar will be displayed consistently with 
      the Mac conventions for menus.

    - An overwriting warning is shown to the user when saving a file
      that already exists.
      

    - Selecting "SymmetricParameter" could produce an exception.
      The SymmetricParameter option is now grayed out if the file
      doesn't contain any parameters. 

    - PYTHONPATH.  This environment variable is correctly overridden,
      so that Iris will not be confused by the user's preexisting
      Python environment.
    

    - Corrected definition of FITS format NULL Primary image HDU which was
       from NAXIS=0, NAXIS1=0  to NAXIS=1, NAXIS1=0.
       

    - Update FITS comment handling to allow comments with no "COMMENT" tag.
      e.g.:"          GENERAL KEYWORDS                                   "
      

    - Correction to FITS handling for COLLECT and CONTRIB keywords which allow
      and produces scalar representations when only 1 value exists.
      i.e.: "COLLECT" vs "COLLECT1"

    - Fix bug in FITS serialization which produced 'TDMAXn' key for
      Spectral Coverage Bounds.