James Dunkerley 1bc27501e6 Remove Column type from Aggregate_Column, simplify Column_Selector, some new File_Formats (#5646) ... - Updated `Widget.Vector_Editor` ready for use by IDE team. - Added `get` to `Row` to make API more aligned. - Added `first_column`, `second_column` and `last_column` to `Table` APIs. - Adjusted `Column_Selector` and associated methods to have simpler API. - Removed `Column` from `Aggregate_Column` constructors. - Added new `Excel_Workbook` type and added to `Excel_Section`. - Added new `SQLiteFormatSPI` and `SQLite_Format`. - Added new `IamgeFormatSPI` and `Image_Format`.		2023-02-16 15:15:49 +00:00
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0.0.0-dev	Remove Column type from Aggregate_Column, simplify Column_Selector, some new File_Formats (#5646)	2023-02-16 15:15:49 +00:00