Gnumeric 1.12.13

Andreas:
	* Fix export of comboboxes to ODF.
	* Fix export of help messages to ODF.
	* Import invisible alignment characters in number formats from ODF.
	[part of #725852]
	* Fix fill-alignment export/import to and from ODF. [part of #726035]
	* Fix distributed-alignment export to ODF. [part of #726035]
	* Fix ODF roundtrip of "center accross selection". [#726010]
	* Improve ODF roundtrip of conditional formats. [#726201]
	* Fix import & export of cell indent from/to ODF.
	* Fix ODF roundtrip of underlines. 

Jean:
	* Fix tooltip position for scale or RTL sheets. [#725941]
	* Really fix the hyperlink tips persistence. [see #706659]

Morten:
	* Support volatile functions. [#305798]
	* Improve testing.
	* Import/Export super/subscript fonts to xlsx. [Part of #726035]
	* Import xlsx auto-filters. [#725460]
	* Update Gnumeric schema.
	* Fix rich text problem. [#726086]
	* Improve xls import/export of conditional formats.  [#726202]
	* Fix case sensitivity for conditional formats. [#726246]
	* Fix minor conditional format GUI issues.
	* Plug leak.
	* Fix font dialog problem with underline.
	* Fix crash reading strange xls file.  [Redhat #1076912]
	* Fix problem clearing existing values in some xlsx cells.  [#726297]
	* Fix criticals for dynamic deps in conditional formats.  [#726163]
	* Fix LOG2 problem.  [#726464]

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