Change log for Chart::Gnuplot

0.09
    - Support the "using" feature of Gnuplot
    - Force setting character encoding before setting terminal to avoid
      potential problem
    - Cleaner fix for the bug of the "command()" method

0.08
    - Fix a bug that plotting data does not work in MSWin
      (Thanks to Anthony Tekatch)
    - Fix a bug that would generate redundant code when the "command()" method
      is called
      (Thanks to Anthony Tekatch)
    - Fix a typo in POD
    - Improve testsuite

0.07
    - Support user-specified path of the convert program
    - Support plotting parametric functions
    - Fix a bug that range does not work if axis is date/time
      (Thanks to Holyspell)

0.06
    - Support formatting legend
    - Fix an error that causes some options of one chart affects other charts
      in multiplot.
    - Fix an error in image format conversion.
    - Better support of MSWin

0.05
    - Fix a bug in timestamp option.
      (Thanks to Lou King)
    - Fix a typo in POD

0.04
    - Support adding time stamp
    - Support adding arbitrary labels
    - Create temporary file when the chart object is created

0.03
    - Support financebars and candlesticks plotting styles
    - Support setting filling the boxes and candlesticks
    - Support setting style of the borders
    - Support plotting 3D graph from arrays of coordinates of data points
    - Support adding 3D data set to multiplot chart
    - Support setting of background color (experimental)
    - Support setting of plot area background color (experimental)
    - Plot in PS if the output file has no extension
    - Fix a bug of checking array lengths in error-type style
    - Update the POD

0.02
    - Fix a bug that makes converting output figure to PDF failed
    - Fix a bug that makes printing certain error mesg failed
    - Add checking whether xdata and ydata array lengths are the same
    - Add more test cases
    - Remove some redundant code

0.01
    Initial release