- Added many new features: Python 3 runtime, container tagging for APM, histogram support, CLC Runner API stats, enhanced systemd check (unit names required, private socket), and numerous new metrics.
- Security update: rotated GPG key used to sign Agent RPM packages; deprecation of the log‑level CLI flag in favor of the DD_LOG_LEVEL environment variable.
- Fixed multiple bugs across checks, tagger, NTP, file descriptor handling, Windows uninstall, and improved documentation and configuration validation.