Release Notes for v42.10.1

Fixes

Fixed webContents.print() honoring printBackground, duplexMode, and printer default duplex settings. #53158 ^{(Also in 43, 44)}
Fixed a crash on macOS when a notification's icon could not be attached; the notification is now shown without the icon. #53148 ^{(Also in 43, 44)}
Fixed an issue where pages loaded in a detached WebContentsView wouldn't see the correct window size. #53151 ^{(Also in 43, 44)}
Fixed the primary instance being killed or receiving truncated arguments when a second instance passed a very long command line or large additionalData to app.requestSingleInstanceLock(). #53157 ^{(Also in 43, 44)}

Backported fixes from upstream ANGLE, Chromium, Dawn, Skia and V8. #52970
Page resources, fetch() calls and file:// loads in renderers no longer wait for the main process to be idle when no webRequest listeners or protocol interceptors are registered. #53143 ^{(Also in 43, 44)}