Create CHANGELOG.md

ecmwf · Jan 28, 2025 · 3c8f22a · 3c8f22a
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+# Changelog for odc
+
+## 1.6.0
+
+* Add a new LongConstantString codec which permits encoding constant columns where the constant is a string > 8 characters in length.
+    * This saves 1 byte per row compared the previous way these columns were encoded.
+    * A python implementation has been added to pyodc at the same time.
+    * Decoding data using this codec will work straight away.
+    * Encoding data with the new codec is disabled by default and can be enabled with the environment variable "ODC_ENABLE_WRITING_LONG_STRING_CODEC=1".
+    * At some point in a future release, encoding will be enabled by default.