New features
- NET Standard 2.0 support
- Add Excel function support for AVERAGEIF and AVERAGEIFS
- CopySheet support in XSSFSheet
- Implemented OMath formula edit/creation in XWPF
- stop .NET Framework 2.0 support (some contributed code start using System.Linq)
- Add Excel function support for AVERAGEIF and AVERAGEIFS
- CopySheet support in XSSFSheet
- Implemented OMath formula edit/creation in XWPF
- Support line and bar mixed chart
BUG Fixes
- Fix SharpZipLib 0.86 dependency issue in .NET Framework 4 and .NET 4.5
- Fix FontHeight property issue in XSSF and HSSF
- solve SecurityRules issue since .NET 4.0 while using AllowPartiallyTrustedCallers
- AutoFilter colId must have value even when it equals 0
- Fix NUnit Test cases in VS2017 (development purpose only)
- MathX.Round() - fixing some instances of incorrect rounding and adding
- Fix Word processing fields issue in XWPF
- Fix a bug of 'adding picture to word' failed