Copyright 2010, 2011 Kevin Ryde

This file is part of Math-PlanePath.

Math-PlanePath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.

Math-PlanePath is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License along
with Math-PlanePath.  If not, see <http://www.gnu.org/licenses/>.



Version 43, September 2011
    - new KochSquareflakes, RationalsTree
    - new parameter_info_array(), parameter_info_list()

Version 42, September 2011
    - new SierpinskiArrowheadCentres, SierpinskiTriangle

Version 41, August 2011
    - new QuadricCurve, QuadricIslands, ImaginaryBase

Version 40, August 2011
    - new DragonRounded, CellularRule54
    - new arms_count() method
    - Flowsnake, FlowsnakeCentres new "arms" parameter

Version 39, August 2011
    - new DragonCurve, DragonMidpoint

Version 38, August 2011
    - new Flowsnake, FlowsnakeCentres

Version 37, July 2011
    - new SquareArms, DiamondArms, File

Version 36, July 2011
    - new HexArms
    - PeanoCurve new radix parameter

Version 35, July 2011
    - new GosperSide
    - fixes for experimental BigFloat support

Version 34, July 2011
    - ZOrderCurve new radix parameter

Version 33, July 2011
    - new GosperIslands

Version 32, June 2011
    - new SierpinskiArrowhead, CoprimeColumns

Version 31, June 2011
    - KochCurve fix for fractional N

Version 31, June 2011
    - PythagoreanTree avoid dubious hypot() on darwin 8.11.0

Version 30, May 2011
    - new TriangularHypot, KochCurve, KochPeaks, KochSnowflakes

Version 29, May 2011
    - GreekKeySpiral rect_to_n_range() tighter $n_lo
    - tests more diagnostics on PythagoreanTree

Version 28, May 2011
    - PixelRings xy_to_n() fix some X==Y points should be undef

Version 27, May 2011
    - new GreekKeySpiral

Version 26, May 2011
    - new PythagoreanTree
    - Rows,Columns more care against width<=0 or height<=0

Version 25, May 2011
    - tests fix neg zero for long double NV

Version 24, May 2011
    - tests fix OEIS file comparisons
    - MultipleRings xy_to_n() fix for x=-0,y=0

Version 23, April 2011
    - new ArchimedeanChords
    - TheodorusSpiral rect_to_n_range() tighter $n_lo

Version 22, March 2011
    - new n_start() method
    - SacksSpiral rect_to_n_range() include N=0

Version 21, February 2011
    - new Hypot, HypotOctant, OctagramSpiral
    - TheodorusSpiral, VogelFloret allow for xy_to_n() result bigger than IV
      (though that big is probably extremely slow)

Version 20, February 2011
    - fix Makefile.PL for perl 5.6.0
    - tests avoid stringized "-0" from perl 5.6.x

Version 19, January 2011
    - new PixelRings

Version 18, January 2011
    - avoid some 5.12 warnings on infs

Version 17, January 2011
    - avoid some inf loops and div by zeros for n=infinity or x,y=infinity
      (handling of infinity is unspecified, but at least don't hang)
    - PyramidRows, PyramidSides exact rect_to_n_range()

Version 16, January 2011
    - new PeanoCurve, Staircase

Version 15, January 2011
    - MultipleRings fix xy_to_n() and rect_to_n_range() at 0,0
    - Corners,Diagonals,MultipleRings tighter rect_to_n_range()

Version 14, December 2010
    - HilbertCurve exact rect_to_n_range()

Version 13, December 2010
    - new HilbertCurve, ZOrderCurve

Version 12, October 2010
    - oops, VogelFloret botched rect_to_n_range()

Version 11, October 2010
    - VogelFloret new rotation and radius parameters
    - SacksSpiral,VogelFloret tighter rect_to_n_range() when away from origin

Version 10, October 2010
    - fix MultipleRings xy_to_n()

Version 9, September 2010
    - HexSpiral and HexSpiralSkewed new "wider" parameter

Version 8, September 2010
    - tests fix stray 5.010 should be just 5.004

Version 7, August 2010
    - new MultipleRings
    - VogelFloret xy_to_n() fix for positions away from exact N
    - Rows, Columns rect_to_n_range() tighter

Version 6, August 2010
    - new TheodorusSpiral

Version 5, July 2010
    - SquareSpiral new "wider" parameter

Version 4, July 2010
    - new PentSpiral, HeptSpiralSkewed
    - PyramidRows "step" parameter

Version 3, July 2010
    - new PyramidSpiral, TriangleSpiral, TriangleSpiralSkewed, PentSpiralSkewed

Version 2, July 2010
    - in Diagonals don't negative sqrt() if n=0

Version 1, July 2010
    - the first version