Changes in version 1.1-3 (12/18/2015)
    * added is.robinson to recognize (pre) Robinson matrices.
    * added random.robinson to create random Robinson matrices.
    * added seriation methods "QAP_LS" and "QAP_2SUM" (QAP-based seriation).
    * added criteria "LS" and "2SUM" from QAP-based seriation.
    * Fixed Spectral_norm seriation.
    * hmap now honors zlim also in dendrogram-based maps.
    * hmap gained option sym for seriation based maps. showdist can now be
      one of "none" (default), "row", "column", or "both".
    * ser_cor and ser_dist gained parameter y. ser_cor gained parameter test
      to perform tests for association.
    * added permute method for hclust and dendrogram objects.

Changes in version 1.1-2 (8/23/2015)
    * Argument (control and ...) check warns now instead of throwing an error.
    * seriation_dist, seriation_cor and seriation_align are now shortened to
      ser_dist, ser_cor and ser_align.
    * method "ppc" is now faster and also available in ser_cor.
    * Fixed ser_cor for "spearman" and "Kendall" (uses now rank correctly).
    * ser_cor and ser_dist gained parameter reverse to indicate that
        permuations are also tried in reverse and the best value is reported.

Changes in version 1.1-1 (7/1/2015)
    * get_permutation_matrix added.
    * seriation_dist measure "ppc" (positional proximity coefficient) added.
    * Fixed bug with permute and ser_permutation_vectors.
    * Identity permutations (NA) give now an error for get_order and
        get_permutation_matrix.
    * Fixed imports for non-base R packages.

Changes in version 1.1-0 (06/09/2015)
    * Seriation method 'Identity' added.
    * Seriation method 'Random' added.
    * Seriation method 'VAT' added.
    * Seriation methods 'Spectral' and 'Spectral_norm' added.
    * Seriation methods 'PCA_angle' and 'MDS_angle' added.
    * Seriation methods 'SPIN_NH' and 'SPIN_STS' added.
    * Several aliases for seriation methods added.
    * Criterion 'RWGAR' added.
    * permutation_matrix2vector and permutation_vector2matrix added.
    * Identity permutation (value NA) added.
    * ser_permutation and ser_permutation_vector can now be used interchangably,
    * get_rank for permutation vectors added.
    * seriation_dist and seriation_alignment to calculate
        dissimilarities between seriation orders added.
    * Wood data set added.
    * Chameleon data sets added.
    * create_lines_data, create_ordered_data added.
    * pimage, hmap and dissplot: Simplified and made interfaces more
        consistent (all use now zlim, consistent default color palettes).
    * pimage gained axes and prop; NA in matrix now works.
    * seriation checks now control arguments consistently.
    * we use now package registry to manage methods.
    * reorder for hclust added.
    * iVAT with path distance added.
    * color palettes (bluered, greenred, greys) added.
    * improved speed of C code.
    * fixed problem with testthat filenames fixed.
    * bburg.f/bbwrg.f: memory access problem fixed.

Changes in version 1.0-14 (12/02/2014)
    * arsa.f: removed 0 flag in rand() so it compiles under AIX
      (reported by Lei Zhang)
    * arsa.f/bburg.f/bbwrg.f: calls now R RNG to be compatible with certain
	    compilers (e.g., Intel FORTRAN) (reported by Rohan Shah)

Changes in version 1.0-13 (3/11/2014)
    * Fixed dependence on MASS

Changes in version 1.0-12 (2/18/14)
    * ser_permutation_vectors can now be reversed with rev
    * get_order: removed the weird labels.
    * we use now testthat
    * fixed bug with intra-cluster ordering using silhouette width
	    (reported by Bettina Gruen)
    * Cleaned up dependencies: TSP, grid, cluster, gclus and colorspace are
	    now imports instead of dependencies.

Changes in version 1.0-11 (9/6/13)
    * service release.

Changes in version 1.0-10 (2/15/13)
    * pimage has now a colorkey and a range argument
    * fixed bug in ARSA when the distance matrix contains all 0s
    * added PACKAGE argument to .Fortran calls

Changes in version 1.0-8 and 1.0-9 (11/6/12)
    * get_order: labels are now in the correct order (Bug report by Crt Ahlin)
    * Replaced Fortran I/O with R I/O for verb=TRUE
    * Fixed pop/newpage bug in pimage.dist (reported by Bettina Gruen)

Changes in version 1.0-7 (9/25/12)
    * Fixed out-of-bounds bug in arsa.f (reported by Rohan Shah)
    * Fixed out-of-bounds bug in bburcg.f

Changes in version 1.0-6 (10/19/11)
    * removed deprecated parameter gamma for dissplot()

Changes in version 1.0-5 (9/2/11)
    * bertinplot(): fixed representation for 0, neg. values and highlight.
	    (Bug report by G. Sawitzki).
    * bertinplot(): added panel.blocks and option for shading
    * bertinplot(): added bertin_cut_line()

Changes in version 1.0-4 (6/28/11)
    * pimage() now uses grid.raster.
    * dissplot() now uses grid.raster.

Changes in version 1.0-3 (1/14/11)
    * improved validity check for permutations and added check for dist with
	    neg. entries to seriate.dist.

Changes in version 1.0-2 (3/13/10)
    * service release

Changes in version 1.0-1 (8/25/09)
    * added drop=FALSE in permute for matrix.
    * fixed reordering for labels.
    * added permute for character.
    * added different methods to calculate between cluster
	    dissimilarities (min, max, avg, Hausdorff).
    * dissplot has now additional options hue, power, gamma, flip and
	    changed behavior for averages. dissplot depends now on colorspace.

Version 1.0-0 (3/24/09)
Version 0.1-1 (9/1/2007)
