Security Fix
- Prevent XXE when loading files PR #4119
Fixed
- Add Sheet may leave Active Sheet uninitialized. Issue #4112 PR #4114
- Reference to Defined Name Specifying Worksheet. Issue #206 PR #4096
- Xls Reader Print/Show Gridlines. Issue #912 PR #4098
- ODS Reader Allow Omission of Page Settings Tags. Issue #4099 PR #4101