Full list of differences found in [this compare](https://github.com/open-telemetry/opentelemetry-proto/compare/v1.0.0...v1.1.0).
Added
* Add `flags` field to `Span` and `Span/Link` for W3C-specified Trace Context flags.
[503](https://github.com/open-telemetry/opentelemetry-proto/pull/503)
Changed
* Update and fix OTLP JSON examples. [516](https://github.com/open-telemetry/opentelemetry-proto/pull/516),
[510](https://github.com/open-telemetry/opentelemetry-proto/pull/510),
[499](https://github.com/open-telemetry/opentelemetry-proto/pull/499)
* Remove irrelevant comments from metric name field. [512](https://github.com/open-telemetry/opentelemetry-proto/pull/512)
* Add comment to explain schema_url fields. [504](https://github.com/open-telemetry/opentelemetry-proto/pull/504)