Version 1.13
    o Bug fix displaying disjunctive expressions (thanks to Mostapha Ashour for
      the report)
    o Bug fix in function getZones(), the function was incorrectly omitting
      one zone (thanks to Pierre Chausse for the report and for the fix)
    o plot parameters are now restored on exit

Version 1.12
    o New function extractInfo(), to allow extracting the counts or the actual
      intersections between several sets, prior to drawing the diagram
      (thanks to Mehrad Mahmoudian for the suggestion)
    o An error is generated if the input is a QCA truth table with more than
      seven explanatory conditions (thanks to Leo Gurtler for the report)

Version 1.11
    o Solved bug related plotting counts for QCA objects
      (thanks to yanbinghan for the report)
    o Argument "counts" is now deprecated, the same information can be passed to
      the argument "ilabels"
    o Some more graphical parameters are possible to be passed via the three
      dots ... argument

Version 1.10
    o Solved bug related to fill colors with ggplot graphics
      (thanks to Dan Chaltiel for the report)
    o Package venn now depends on R >= 3.5.0

Version 1.9
    o Better handling of internal data, possibly solving rare bugs when
      installing in non-standard, custom directories
    o Argument "size" from function venn() renamed to "plotsize", as the former
      is a formal argument for the ggplot2 function geom_path()
    o Added flexibility when using additional aesthetic ggplot parameters

Version 1.8
    o New arguments "box", "par" and "ggplot" to function venn()
      (thanks to Mehrad Mahmoudian for the suggestion)
    o Arguments "cexil" and "cexsn" in function venn()
      renamed to "ilcs" and "sncs"
    o Function venn() now accepts set names containing spaces
      (thanks to Andre Gohr for the suggestion)

Version 1.7
    o Bug fix, when the input in the venn() function is a QCA solution.
    o Argument "counts" in function venn() is now used as a numerical vector for
      the set intersections (thanks to William Robbins for the suggestion)

Version 1.6
    o Major change in the treatment of custom intersections, the package
      now supports set unions (using the plus sign), as well as set intersections.
      Multiple intersections / expressions are now separated with a comma.
    o New argument "borders" to function venn(), defaulted to TRUE in order to
      preserve backwards compatibility. When deactivated, only the custom
      intersections will be plotted.

Version 1.5
    o Adapted to package QCA version 3.0
    o Replaced the argument "nofsets" with "snames", in function getZones()
    o Argument "transparency" renamed to "opacity"
    o Arguments "zcolor" and "col" in function venn() now accept a single
      character expression, as well as a character vector to specify colors
    o Removed suggestion to package QCAGUI, which is now merged into package QCA
    o Argument cexil in function venn() is now defaulted to 0.6, with an
      automatic change to 0.5 for six sets and 0.45 for seven sets
    o When the input is a list, invisibly return the truth table and the counts
      for each intersection, with an attribute called "intersections" containing
      its elements (thanks to Jeena Ganga for the suggestion)

Version 1.2
    o Adaptation to package QCA version 2.2
    o Fixed a bug when interpreting a SOP expression, the negation of a set
      was interpreted as the set itself
    o When the expression is a valid R statement, quoting is not necessary
      anymore

Version 1.1
    o Fixed minor bugs
    o New feature to draw a Venn diagram using a SOP (sum of products) expression
    o QCA type objects can have transparency based on the inclusion score
    o Parameters for borders can have lengths, recycled to the length of zones

      The following were all suggested by Tom Wenseleers (with thanks):

    o The plot window is now forced to a square, using asp = 1
    o New shapes for 4 and 5 sets, to maximize the space for intersections
    o Default color styles, and associated border colors
    o Variable text size for the intersection labels and for the set names


Version 1.0
    o First version of the package
