v1.5.0 (2021-07-08)

Context

• No changes.

Traces

• Adding environment variables for event and link attribute limits.
  (#1751)
• Clarify some details about span kind and the meanings of the values.
  (#1738)
• Clarify meaning of the Certificate File option.
  (#1803)

Metrics

• Clarify the limit on the instrument unit.
  (#1762)

Logs

• Declare OTLP Logs Beta. (#1741)

Resource

• No changes.

Semantic Conventions

• Clean up FaaS semantic conventions, add aws.lambda.invoked_arn.
  (#1781)
• Remove rpc.jsonrpc.method, clarify that rpc.method should be used instead.
  (#1748)

Compatibility

• No changes.

OpenTelemetry Protocol

• No changes.

SDK Configuration

• Allow selecting multiple exporters via OTEL_TRACES_EXPORTER and OTEL_METRICS_EXPORTER
  by using a comma-separated list. (#1758)