Developers using System.Text.Json have their top requests addressed so that they can use STJ in more scenarios

[terrajobst]

Work

• Should we add support to ignore cycles on serialization? Should we add support to ignore cycles on serialization? #40099
• JsonSerializer TimeSpan support JsonSerializer support for TimeSpan in 3.0? #29932
• Writing raw property values when using Utf8JsonWriter Writing raw JSON values when using Utf8JsonWriter #1784
• Synchronous deserialize and serialize to a stream with JsonSerializer Synchronous deserialize and serialize to a stream with JsonSerializer. #1574
• Add snake_case support Add snake_case support for System.Text.Json #782
• Add JsonPath support to JsonDocument/Element Add JsonPath support to JsonDocument/JsonElement #31068
• Support DateOnly and TimeOnly in JsonSerializer Support DateOnly and TimeOnly in JsonSerializer #53539

[MhAllan]

JsonSerializer TimeSpan support - is very important, everyone run back to Newtonsoft because of this.

[Rwing]

The pace is too slow, everyone need this features now. maybe put it in 5.0.2 or 5.1 is better.

[Romfos]

Allow support for non-public members +++++

[ishepherd]

Can any of these be plugged in naturally by a 3rd party if they had the right extensibility support?

A 3rd party library can evolve so much easier than .NET