

Added content blocking, a collection of Firefox settings that offer users greater control over technology that can track them around the web. WebGL power preferences allow non-performance-critical applications and applets to request the low-power GPU instead of the high-power GPU in multi-GPU systems.Performance improvements for macOS users Firefox theme now matches the Windows 10 OS Dark and Light modes.

Moved the build infrastructure of Firefox on Windows to the Clang toolchain, bringing important performance gains.

