Update README.md

Author: klauspost

README.md

@@ -16,6 +16,10 @@ This package provides various compression algorithms.
 
 # changelog
 
+* July 1st, 2023 - [v1.16.7](https://github.com/klauspost/compress/releases/tag/v1.16.7)
+	* zstd: Fix default level first dictionary encode https://github.com/klauspost/compress/pull/829
+	* s2: add GetBufferCapacity() method by @GiedriusS in https://github.com/klauspost/compress/pull/832
+
 * June 13, 2023 - [v1.16.6](https://github.com/klauspost/compress/releases/tag/v1.16.6)
 	* zstd: correctly ignore WithEncoderPadding(1) by @ianlancetaylor in https://github.com/klauspost/compress/pull/806
 	* zstd: Add amd64 match length assembly https://github.com/klauspost/compress/pull/824
@@ -50,6 +54,9 @@ This package provides various compression algorithms.
 	* s2: Support io.ReaderAt in ReadSeeker. https://github.com/klauspost/compress/pull/747
 	* s2c/s2sx: Use concurrent decoding. https://github.com/klauspost/compress/pull/746
 
+<details>
+	<summary>See changes to v1.15.x</summary>
+	
 * Jan 21st, 2023 (v1.15.15)
 	* deflate: Improve level 7-9 by @klauspost in https://github.com/klauspost/compress/pull/739
 	* zstd: Add delta encoding support by @greatroar in https://github.com/klauspost/compress/pull/728
@@ -176,6 +183,8 @@ Stream decompression is now faster on asynchronous, since the goroutine allocati
 
 While the release has been extensively tested, it is recommended to testing when upgrading.
 
+</details>
+
 <details>
 	<summary>See changes to v1.14.x</summary>