datadog_trace 0.54.0

APM and distributed tracing for PHP


The Datadog PHP Tracer brings APM and distributed tracing to PHP.

License: BSD 3-Clause

Changes

### Added
- Support distributed tracing for calls to curl_multi_exec() #1119
### Changed
- Refactor PHP 7 curl distributed tracing #1123
- Real package verification on nginx, cli, apache #1129