CHANGELOG.md in d_heap-0.6.1 vs CHANGELOG.md in d_heap-0.7.0

@@ -1,6 +1,23 @@
 ## Current/Unreleased
 
+## Release v0.7.0 (2021-01-24)
+
+* 💥⚡️ **BREAKING**: Uses `double`) for  _all_ scores.
+    * 💥 Integers larger than a double mantissa (53-bits) will lose some
+        precision.
+    * ⚡️ big speed up
+    * ⚡️ Much better memory usage
+    * ⚡️ Simplifies score conversion between ruby and C
+* ✨ Added `DHeap::Map` for ensuring values can only be added once, by `#hash`.
+    * Adding again will update the score.
+    * Adds `DHeap::Map#[]` for quick lookup of existing scores
+    * Adds `DHeap::Map#[]=` for adjustments of existing scores
+    * TODO: `DHeap::Map#delete`
+* 📝📈 SO MANY BENCHMARKS
+* ⚡️ Set DEFAULT_D to 6, based on benchmarks.
+* 🐛♻️  convert all `long` indexes to `size_t`
+
 ## Release v0.6.1 (2021-01-24)
 
 * 📝 Fix link to CHANGELOG.md in gemspec
 
 ## Release v0.6.0 (2021-01-24)