chore: prepare release API 1.8.0/Core 1.21.0/Experimental 0.49.0

[pichlermarc]

API 1.8.0

:rocket: (Enhancement)

• feat(api): add SugaredTracer for functions not defined in the spec #3317 @secustor

:bug: (Bug Fix)

• fix(api): fix unreachable @opentelemetry/api/experimental entry #4446 @legendecas

Core 1.22.0

:rocket: (Enhancement)

• feat(sdk-metrics): allow single bucket histograms #4456 @pichlermarc
• feat(context-zone-peer-dep, context-zone): support zone.js 0.13.x, 0.14.x #4469 @pichlermarc
• chore: Semantic Conventions export individual strings 4185 @MSNev

:bug: (Bug Fix)

• fix(sdk-metrics): handle zero bucket counts in exponential histogram merge #4459 @mwear
• fix(sdk-metrics): ignore NaN value recordings in Histograms #4455 @pichlermarc
  • fixes a bug where recording NaN on a histogram would result in the sum of bucket count values not matching the overall count
• fix(sdk-metrics): allow single bucket histograms #4456 @pichlermarc
  • fixes a bug where Meter.createHistogram() with the advice explicitBucketBoundaries: [] would throw
• fix(context-zone-peer-dep, context-zone): support zone.js 0.13.x, 0.14.x #4469 @pichlermarc
  • fixes a bug where old versions of zone.js affected by https://github.com/angular/angular/issues/53507 would be pulled in

:books: (Refine Doc)

• docs: shorten readme sections #4460 @legendecas

Experimental 0.49.0

:boom: Breaking Change

• fix(otlp-exporter-base)!: remove unload event from OTLPExporterBrowserBase #4438 @eldavojohn
  • Reason: The 'unload' event prevents sites from taking advantage of Google's backward/forward cache and will be deprecated. It is now up to the consuming site to implement these shutdown events.
  • This breaking change affects users under this scenario:
    1. A user extends the exporter and overrides the shutdown function, and does something which is usually called by the unload listener
    2. We remove the unload event listener
    3. That user's overridden shutdown function no longer gets called

:rocket: (Enhancement)

• feat(instrumentation): allow LoggerProvider to be specified in Instrumentations #4314 @hectorhdzg
• feat(instrumentation): add getModuleDefinitions() to InstrumentationBase #4475 @pichlermarc
• feat(exporter-metrics-otlp-http): add option to set the exporter aggregation preference #4409 @AkselAllas
• feat(node-sdk): add spanProcessors option #4454 @naseemkullah

:bug: (Bug Fix)

• fix(sdk-node): allow using samplers when the exporter is defined in the environment #4394 @JacksonWeber
• fix(instrumentation): normalize paths for internal files in scoped packages #4467 @pichlermarc
  • Fixes a bug where, on Windows, internal files on scoped packages would not be instrumented.
• fix(otlp-transformer): only use BigInt inside hrTimeToNanos() #4484 @pichlermarc
• fix(instrumentation-fetch): do not enable in Node.js; clarify in docs this instr is for web fetch only #4498 @trentm

[codecov[bot]]

Codecov Report

Merging #4504 (66eee1a) into main (05720cc) will decrease coverage by 0.46%. The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4504      +/-   ##
==========================================
- Coverage   92.85%   92.40%   -0.46%     
==========================================
  Files         328      330       +2     
  Lines        9453     9531      +78     
  Branches     2011     2036      +25     
==========================================
+ Hits         8778     8807      +29     
- Misses        675      724      +49     

see 4 files with indirect coverage changes