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Summary of important user-visible changes for releases of the signal package

===============================================================================
signal-1.3.0   Release Date: XXXX-XX-XX   Release Manager: TBD
===============================================================================

 ** The following functions are new:

      primitive

 ** The function `resample' was fixed to accept integer-type arguments.

===============================================================================
signal-1.2.2   Release Date: 2013-03-25   Release Manager: Mike Miller
===============================================================================

 ** No change release to correct bad file permissions on previous release.

===============================================================================
signal-1.2.1   Release Date: 2013-03-17   Release Manager: Mike Miller
===============================================================================

 ** The following functions are new:

      buttap
      cheb1ap
      cheb2ap
      ellipap
      findpeaks
      fwht
      ifwht

 ** Improved Matlab compatibility for the following window functions:

      barthannwin
      blackmanharris
      blackmannuttall
      chebwin
      flattopwin
      nuttallwin

    The changes include always returning a column vector, returning a valid
    window for a length argument of 1, and making all arguments after the
    length optional.

 ** Minor updates to documentation for the following functions:

      cpsd
      mscohere
      sos2tf
      sos2zp
      tfestimate
      zp2sos


 ** signal is no longer dependent on the optim package.

===============================================================================
signal-1.2.0   Release Date: 2012-09-21   Release Manager: Carnë Draug
===============================================================================

 ** Improved Matlab compability for the function `fir2'. This changes include
    always returning vaues in a row (even when the smoothing window is a single
    column), the default values for grid_n and ramp_n, and returning an error
    when invalid values are used (instead of silently adjusting them).

 ** Fixed failing tests for the following functions:

      fir1      pei_tseng_notch     residued

 ** The function `rceps' was fixed to work correctly with odd-length inputs.

 ** Bugfix in `xcorr2' introduced in 1.1.2 that would not accept "none" as
    scale option.

 ** `xcorr2' scaling option "coeff" was changed to return the normalized
    cross-correlation.

 ** The following functions are new:

      movingrms     schtrig     clustersegment

 ** signal is no longer dependent on the image package.

 ** signal is now dependent on the general package.

===============================================================================
signal-1.1.3   Release Date: 2012-05-12   Release Manager: Carnë Draug
===============================================================================

 ** signal is no longer dependent on the audio package.

 ** signal is now dependent on the image package.

 ** The function `marcumq' was imported from the communications package and has
    been completely rewritten to improve performance and fix computational
    errors.

 ** Package is no longer automatically loaded.

 ** The functions `__ellip_ws' and `__ellip_ws_min' have been removed (they
    are now subfunctions of `ncauer'.

 ** The function `blackmanharris' was fixed to have even symmetry.

===============================================================================
signal-1.1.2   Release Date: 2012-01-06   Release Manager: Lukas Reichlin
===============================================================================

 * Added the following filter conversion functions:
    ss2tf
    ss2zp
    tf2ss
    tf2zp
    zp2ss
    zp2tf

===============================================================================
signal-1.1.1   Release Date: 2011-11-06   Release Manager: Juan Pablo Carbajal
===============================================================================

 * Following function now show help text correctly instead of copyright notice:
    downsample
    dst
    flattopwin
    fwhm
    idst
    square
    upsample
 * Apply pathc by Paul Dreik to cl2bp_lib.h.

===============================================================================
signal-1.1.0   Release Date: 2011-11-04   Release Manager: Juan Pablo Carbajal
===============================================================================

* Minor bug fixes in:
 blackmannuttall.m
 xcorr.m
 filtfilt.m
 invfreq.m
 invfreqs.m
 resample.m

* New functions added:
 data2fun.m
 impinvar.m
 invimpinvar.m
 sigmoid_train.m
 pei_tseng_notch.m
 iirlp2mb.m

* Not implemented functions removed from the documentation.
* All demos are now working!