- Unzip shared string table to system temporary file when large inner XML, reduce memory usage about 70%
- Remove unnecessary exported variable `XMLHeader`, we can using `encoding/xml` package's `xml.Header` instead of it
- Using constant instead of inline text for default XML path
- Rename exported option field `WorksheetUnzipMemLimit` to `UnzipXMLSizeLimit`
- Unit test and documentation updated
Improve unit test coverage for the functions: `NewStyle`, `SetActiveSheet`, `SearchSheet` and `deleteAndAdjustDefinedNames`
Simplify code and add comments for the function: `deleteAndAdjustDefinedNames`
* extend cell value load to support custom datetime format
* cleanup incorrect imports
* fix numeric values conversion as done in legacy Excel
* fix tests coverage
* revert temporary package name fix
* remove personal info from test XLSX files
* remove unused dependencies
* update format conversion in parseTime
* new UT to increase code coverage
* Resolve code review issue for PR #703
* Rename broken file name generated by unit test
Co-authored-by: xuri <xuri.me@gmail.com>