v1.3.0

What's Changed

Now it should be compatible with:

• .NET Core 3.1
• .NET 5.0
• .NET 6.0
• .NET 7.0

• Update test units by @zatvorius in #18
• Update test units by @kratzky in #20
• Update target frameworks list by @kratzky in #21

Full Changelog: v1.2.1...v1.3.0