v1.0.4

Release 1.0.4 of Baksteen.Extensions.DeepCopy

• dropped .net 7 support
• added .net 9 support
• speed up copy of other System.Numerics types

See also: https://www.nuget.org/packages/Baksteen.Extensions.DeepCopy

Full Changelog: v1.0.3...v1.0.4