goffice 0.5.2: Jean: * Fix xy color scale when some data are missing. [#475394] * Fix NULL pointer crash in gog_line_view_render(). [#492485] Jody: * Add the ability to make a GogObject invisible. Morten: * Fix moving-average problem. [#491328] Sum1: * Fix ABR in spline code. [#492158] --------------------------------------------------------------------------