[Desktop] Release Notes for 1.21.x Release #1

[LaurenWags]

Release Notes:

• Skip initialization of referral system for the default referral code. (#14428)
• Upgrade from Chromium 89.0.4389.69 to Chromium 89.0.4389.72. (#14412)
• List PeerID and AgentVersion in brave://ipfs. (#13839)
• Add additional padding to new tab "+" button. (#13835)
• Fix adblocking regression for requests made by Service Workers. (#13781)
• Brave crashes when switching between profile icons. (#13762)
• Adblock rules should apply to HTTP subresources of an IPFS page. (#13742)
• IPFS with local node has Shields UI not available. (#13741)
• Bug: ipfs:// drops query and hash parts. (#13722)
• Filter out Wicked Reports trackers from URLs. (#13647)
• Filter out Olytics' tracking from URLs. (#13644)
• Enable DNS over HTTPS UI on Linux. (#13617)
• "Estimated pending rewards" shows incorrect balance if payment tokens are redeemed more than once before successfully reconciling the payment balance. (#13601)
• Monthly Contribution Statement dropdown always shows latest month, even when another month is selected. (#13590)
• Add IPFS repo stats to brave://ipfs page. (#13528)
• Sometimes multiple ipfs:// background tabs don't connect on session restore. (#13519)
• Fix the wording on the BR widget. (#13397)
• Add rewards setup panel to onboarding tour. (#13379)
• Implement cosmetic filters. (#13070)
• Set default browser first_run dialog on macOS and Linux. (#12679)
• Workers not farbling user agent properly - follow up to 12097. (#12392)
• [Security] Enable blocklist_extension_fetcher. (#12297)
• 'Set browser as default' dialog on 2nd and nth launch. (#12203)
• Binance widget and autocomplete shouldn't use /en/ for all locales. (#9691)
• Exception rules in brave://adblock or regional lists are ignored. (#5440)
• Add an option in Settings to install/enable and uninstall/disable Widevine Plugin (Muon parity). (#2791)
• Nightly shortcut links to wrong version on Linux. (#1746)