v1.22.0

1.22.0

🚀 (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 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 angular/angular#53507 would be pulled in

📚 (Refine Doc)

• docs: shorten readme sections #4460 @legendecas