Gnumeric 1.12.52

Morten:
	* Attach the vertical alignment selector to the toolbar.
	* Improve the toolbar styling a bit.
	* Fix toolbar overflow menu's labeling.
	* Many improvements to vertical toolbars.
	* Install appdata file in new location [#612]
	* Allow styling of cell extension indicators.
	* Restore bolding of active sheet tab.
	* Fix import of mildly broken print settings in xlsx files from
	  OnlyOffice.
	* Various --with-long-double fixes.
	* Fix BITAND.
	* Test improvements.
	* Fix xlsx write for sheet objects with text contents.  [#617]
	* Fix leak.
	* Fix old problem saving column widths.  [#619]
	* Set default number of sheets to 1.
	* Fix edge error case for SMALL and LARGE.  [#620]
	* Increase the default column width a bit.
	* Fix xlsx import/export of default column width.
	* Be less aggressive with automatic column widening.  [#621]

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