Add 3.8.0 changelog

kafka4beam · Jun 5, 2019 · 3f14b43 · 3f14b43
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diff --git a/changelog.md b/changelog.md
@@ -163,4 +163,9 @@
     belong to open transactions (transactions which are neigher committed nor aborted),
     may result in an empty message set, then `brod_consumer` or `brod_utils:fetch` jumps to
     the next offset (if it is less than high-watermark offset).
+* 3.8.0
+  * Bump to kafka_protocol 2.2.9 (allow `atom()` hostname)
+  * Add `brod:fold/8`. This API spawns a process to fetch-ahead while folding the prefiously
+    fetched batch. `brod-cli`'s `fetch` command is updated to call this `fold` API for better
+    performance.