Log Message:
Update to 0.5.3:

goffice 0.5.3:

Jean:
	* Fix crash in gog_barcol_view_render. [#497777]

Morten:
	* Improve classification of date formats.

Emmanuel:
	* Draw a frame around the graph area in graph editor.
	* Improve legend swatch appearance.
	* Populate the add button of the graph editor with more items.