v6.0.0-beta.3

Breaking Changes

• Addon-backgrounds: Simplified parameters API (#10634)

Bug Fixes

• Core: Fix globalArgs initialization from global parameters (#10566)
• Core: Fix DLL context for IE11 ([#106444]#10644))

Dependency Upgrades

• Addon-storyshots: Upgrade to jest 26 (#10642)
• Bump terser-webpack-plugin from 2.3.6 to 3.0.0 (#10650)