📝 Update changelog

README.md

@@ -170,17 +170,15 @@ individual implementations.  Refer to their documentation for specifics.
 
 ## Changelog
 
-* `3.0.0`
+* `2.1.0`
   * Actual JSON encoding has **not** changed, so this is compatible with JSON
-    generated by `2.0.0`, but validation is more strict on things that should
-    be non-negative (which would not normally have been written by `2.0.0`, so
+    generated by `2.0.1`, but validation is more strict on things that should
+    be non-negative (which would not normally have been written by `2.0.1`, so
     it should not cause issues).
   * 🐛 **Bugfix:**  For all algorithms, equivalently-due cards would appear in
-      reverse input order. This shuffles their order instead, to prevent the
-      same ordering from occurring repeatedly.
+    reverse input order. This shuffles their order instead, to prevent the
+    same ordering from occurring repeatedly.
   * `SpacedRepetition.Leitner`
-    * 💥 **Breaking:** `lastSeen` is now `lastReviewed` in `QueueDetails`, to be
-      more explicit/consistent with naming.
     * 🏷️ `NumberOfBoxes` is now exposed (but still opaque), so you may write type
       signatures with it.
     * 📝 Note that cards will be graduated after answering (even with `Pass`) if
@@ -191,19 +189,7 @@ individual implementations.  Refer to their documentation for specifics.
       couldn't cause problems by returning zero prior to this version (shh...).
     * ⚡️ Tail-call optimized `fibonacciSpacing`, so you can have intervals of 10^38
       years for your 200th box if you're an eternal but not omniscient being.
-  * `SpacedRepetition.SMTwo`
-    * 💥 **Breaking:** `lastSeen` is now `lastReviewed` in `QueueDetails`, to be
-      more explicit/consistent with naming.
   * `SpacedRepetition.SMTwoAnki`
-    * 💥 **Breaking:** `lastSeen` is now `lastReviewed` in `QueueDetails`, to be
-      more explicit/consistent with naming.
-    * (Technically) **Breaking:** `AnkiSettings.startingEase` is now an `Ease`,
-      not a `Float`.  This should not actually require any effort on your part,
-      as it is still created using `setStartingEase` in the exact same way.
-    * (Technically) **Breaking:** `AnkiSettings.leechThreshold` is now a
-      `Natural`, not an `Int`.  This should not actually require any effort on
-      your part, as it is still created using `setLeechThreshold` in the exact
-      same way.
     * 🐛 **Bugfix:** Ensure that cards always graduate from being "lapsed"
       *regardless of the answer if there are no lapse steps*.  This was
       the behavior specified in the documentation of `lapseSteps`, but it wasn't
@@ -227,15 +213,12 @@ individual implementations.  Refer to their documentation for specifics.
       already been partially studied to remove previously-extant `newSteps`.
     * 🚸 `getLeeches` now returns cards with the same number of lapses in
       order of their appearance in the input deck.
-    * 🏷️ `Ease`, `TimeInterval`, `Days`, `Minutes`, and `Natural` are now exposed
-      (but still opaque), so you may write type signatures with them.
+    * 🏷️ `TimeInterval`, `Days`, and `Minutes` are now exposed (but still
+      opaque), so you may write type signatures with them.
     * 📝 Fix broken links to Anki documentation, since the URLs moved.
     * 🩹 Fix bug in non-exposed function.  This bug could not have actually
       caused erroneous behavior in any exposed functions, but it might have
       going forwards had its output been used for something else.
-  * `SpacedRepetition.SMTwoPlus`
-    * 💥 **Breaking:** `lastSeen` is now `lastReviewed` in `QueueDetails`, to be
-      more explicit/consistent with naming.
 * `2.0.1` -- 🐛 Fixed a bug in `SpacedRepetition.SMTwoAnki` that caused the
   extra interval from studying an overdue card to not count with `Good` answers.
   Per the algorithm, half of the overdue amount should be included in