18.4.0.0

• [*] Improves our user images download logic to avoid synchronization issues. [#17197]
• [*] Fixed an issue where images point to local URLs in the editor when saving a post with ongoing uploads. [#17157]
• [**] Embed block: Add the top 5 specific embed blocks to the Block inserter list. [https://github.com/wordpress-mobile/gutenberg-mobile/pull/3995]
• [*] Embed block: Fix URL update when edited after setting a bad URL of a provider. [https://github.com/wordpress-mobile/gutenberg-mobile/pull/4002]
• [**] Users can now contact support from inside the block editor screen. [https://github.com/wordpress-mobile/gutenberg-mobile/pull/3975]