### Added
- Instrument pcntl_fork and reset tracing when it is called #1633 (Thanks @jlesueur)
- ARM64 support (Build arm images in CI) #1701
### Changed
- Accept pseudonym on via header as specified by rfc7230 #1696
- Add agent target URL to flush-message to help with debugging #1705
- Add IPv6 support to DD_AGENT_HOST #1707
### Fixed
- Fix span memory leak and packaging #1697
- Fix datadog-setup.php failing in environments without scan directory #1702
- Fix random number generator usage #1704
- Set root span name only in HttpKernel::boot() to avoid side effects on CLI #1706
- Fix meta information loss in PDOIntegration #1708
### Internal changes
- Update artifact URL for v0.77.0 gitlab deployments #1686
- Update relenv to use datadog-setup.php #1689
- Add arm support to docker images #1699
## Application Security Monitoring (v0.4.0)
#### Fixed
- Fix interned string invalidation on PHP <= 7.2 DataDog/dd-appsec-php#99
- Replace `php_error_docref` with `php_log_err` DataDog/dd-appsec-php#101
#### Changed
- Log helper communication DataDog/dd-appsec-php#97
- Set environment values at rinit on php-fpm DataDog/dd-appsec-php#105
#### Internal changes
- Update development documentation DataDog/dd-appsec-php#98
- Update system tests with new variants DataDog/dd-appsec-php#102
- Add helper test for config DataDog/dd-appsec-php#108
- Fix missing helper header coverage DataDog/dd-appsec-php#109
- Upgrade integration test tracer version to 0.76.1 DataDog/dd-appsec-php#110
- Add a way to include local changes to the cmake build process DataDog/dd-appsec-php#111
- libddwaf upgraded to 1.4.0 DataDog/dd-appsec-php#116
## Profiling (v0.9.0)
#### Added
- Add Unix Domain Socket (UDS) support #1698