update changelog

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Simon Cruanes 2023-03-06 12:44:09 -05:00
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@ -1,4 +1,19 @@
## 0.4
- expose `Scope.get_surrounding`
- rehault of GC metrics
- `Trace.with_` now has `force_new_trace_id` param
- use thread-local storage to store global scope
- add `Span_link` module
- add a `Globals.default_span_kind` ref to specify default span kind
- fix(otel-lwt): missing modules now re-exported
- fix(client-ocurl): fix `tick` version used in the absence of bg thread
- drop dep on ocaml-protoc as the generated code is checked-in
- update vendored otel to 0.19
## 0.3
- improve error reporting from ocurl exporter