* Fixes in CI (#406)
* Create .gitattributes
* Update .travis.yml
* Update .travis.yml
* travis fix
* only errors are printed in travis log
* spreadsheet errors fixed: duplicate ID in non-visual properties and lack of third axis in an example
* set-strict example fix
* build-examples.sh exits with error status in the case of build error
* redundant command deleted from script
* unneeded image relationships removed
* pptx validation errors fixes
* all output to travis
Co-authored-by: Gunnsteinn Hall <gunnsteinn.hall@gmail.com>
* only input files remain, output deleted
* example changed to produce a new file instead of modifying the old one
* source document with incorrect characterSet is fixed; ppt path is fixed; invalid strict example is removed
* Ignorable attributes added for validating newer versions of Office
* indentation fix
* 4 byte values for rgb attr
* Validate examples in travis
* indentation
* travis files moved to subfolder
* fixed and renamed validate-examples.sh
* avoiding double building
* Update .travis.yml
* Fix indent
Co-authored-by: Gunnsteinn Hall <gunnsteinn.hall@gmail.com>
* Issue #376 fix - RemoveColumn
* Removing of columns is forbidden when there are formula arrays in the area of removing, except 1-column wide arrays
* Modifying named ranges, column ranges when deleting a column
* Updating formulas when deleting a column
* UpdateAction
* CELL function
* CELL moved to fninformation.go
* CHOOSE function
* CHOOSE function add one test
* COLUMN function
* COLUMNS function
* COUNTIF function
* COUNTIF, COUNTIFS, MINIFS, MAXIFS, SUMIF, SUMIFS, some style fixes
* SUMIF and SUMIFS moved to the right location
* VALUE function
* wildcard is added
* CELL format fix
* Add funcs to remove sheet from workbook
- RemoveSheet added to remove sheet by index
- RemoveSheetByName added to remove sheet by its name
* Add `CopyRelationship` func to `Relationships`
* Add funcs `CopySheet`, `CopySheetByName`
- `CopySheet` copies sheet at the specified index
- `CopySheetByName` copies sheet with the specified name
* Make `CopyRelationship` return copied rel and bool flag
* Add func `CopyOverride` to `ContentTypes`
* Add test for `CopyRelationship`
* Add tests for sheet removing funcs
* Add test for `CopyOverride`
* Add tests for `CopySheet`, `CopySheetByName`