Changelog for plot-gtk-0.1.0.6

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0.1: * initial version

0.1.0.1: * unshadowed fig in Gtk.hs

0.1.0.2: * updated documentation for multiline example

0.1.0.3: * bumped gtk dependency

0.1.0.4: * bumped hmatrix dependency

0.1.0.5: * added a destroy method

0.1.0.6: * export destroy method