release: 2.20.0 changelog (#147)

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Co-authored-by: Mike Hardy <github@mikehardy.net>

changelog.asc

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 = AnkiDroid Changelog
 
+== Version 2.20.0 (20241204)
+
+In 2020, implementing Anki's latest scheduling improvements would have taken years. Today, the same process takes weeks due to the extensive effort of merging Anki's codebase into AnkiDroid. Enjoy your even more efficient reviews!
+
+* Your https://opencollective.com/ankidroid/contribute[donations] paid for the work to make this happen so quickly 🤗
+* *AnkiDroid Updates*
+** Includes https://apps.ankiweb.net/[Anki 24.11], with https://github.com/open-spaced-repetition/fsrs4anki[FSRS 5.0]
+*** If you use FSRS, we recommend re-optimizing parameters
+** Forget Cards: Add link to manual
+** Deck Overview: Re-include 'total cards' statistics
+* *Anki 24.11 Features*
+** FSRS 5.0
+*** Want to try FSRS (the Free Spaced Repetition Scheduler)? Enable it in deck options
+*** (experimental) FSRS now schedules same-day reviews if you remove all learning steps
+*** Load balancing: within your fuzz range, Anki will now try to pick days that have fewer reviews waiting.
+** Deck Options: https://docs.ankiweb.net/deck-options.html#the-simulator[FSRS Simulator]
+** Deck Options: https://docs.ankiweb.net/deck-options.html?#easy-days[Easy days] - you can now tell Anki to try avoid certain days of the week
+** Card Info: Add forgetting curve
+** Decks can now be sorted by descending retrievability. 
+*** Simulations have shown this is a better choice when you have a backlog, and this sort order is likely to become the default in the future.
+** Statistics: Add true retention stats
+** Statistics: Estimated total knowledge by note, and daily load
+** Card Info: Include card position information
+** See more in https://github.com/ankitects/anki/releases/tag/24.11[the Anki 24.11 changelog]
+* *Fixes*
+** Blocked AnkiWeb email addresses being sent to our private crash reporting server if an error occurs when displaying sync server email verification messages
+*** Crash reports are *never* shared nor permitted to be shared, but;
+*** Wiped those records anyway and installed rules to reject them on server as well
+** Removed 'show keyboard shortcuts' hint after numeric keypresses
+* *Deprecation*
+** AnkiDroid 2.20.0 no longer supports https://apilevels.com/[Android 6 (2015)]
+* https://crowdin.com/project/ankidroid[New community-provided language translations]
+* https://github.com/ankidroid/Anki-Android/milestone/64?closed=1[Full changelog]
+
+
 == Version 2.19.3 (20241129)
 * Huge batch of fixes for 2.19 series - see main 2.19.1 notes below 👇
 * Huge thanks for the https://opencollective.com/ankidroid[donations] - big impact for our small crew 💌