45.beta.1 ========= * Fix input handling in alt-tab and several other components [Carlos; !2872] * Fix screenshot tool [Florian; 2877] * Export notification source classes for extensions [Andy; 2869] * Finishing ESM porting touches [Florian; 2880] * Misc. bug fixes and cleanups [Andrew, Carlos, Florian; !2866, !2871, !2876, !2878, !2879] Contributors: Carlos Garnacho, Florian Müllner, Andy Holmes, Andrew Zaech Translators: Piotr Drąg [pl], Kukuh Syafaat [id]