Update CHANGELOG.md

CHANGELOG.md

@@ -2,15 +2,17 @@
 
 ## HDMF 3.9.1 (Upcoming)
 
+### Minor improvements
+- Removed warning when namespaces are loaded and the attribute marking where the specs are cached is missing. @bendichter [#926](https://github.com/hdmf-dev/hdmf/pull/926)
+
 ### Bug fixes
 - Fixed bug allowing `DynamicTable` to be constructed with empty `id` column when initializing all columns via `AbstractDataChunkIterator` objects. @oruebel [#953](https://github.com/hdmf-dev/hdmf/pull/953)
 
-
 ## HDMF 3.9.0 (August 25, 2023)
 
 ### New features and minor improvements
-- Increase raw data chunk cache size for reading HDF5 files from 1 MiB to 32 MiB. @bendichter, @rly [#925](https://github.com/hdmf-dev/hdmf/pull/925)
-- Increase default chunk size for `GenericDataChunkIterator` from 1 MB to 10 MB. @bendichter, @rly [#925](https://github.com/hdmf-dev/hdmf/pull/925)
+- Increased raw data chunk cache size for reading HDF5 files from 1 MiB to 32 MiB. @bendichter, @rly [#925](https://github.com/hdmf-dev/hdmf/pull/925)
+- Increased default chunk size for `GenericDataChunkIterator` from 1 MB to 10 MB. @bendichter, @rly [#925](https://github.com/hdmf-dev/hdmf/pull/925)
 - Added the magic `__reduce__` method as well as two private semi-abstract helper methods to enable pickling of the `GenericDataChunkIterator`. @codycbakerphd [#924](https://github.com/hdmf-dev/hdmf/pull/924)
 - Updated `add_ref_termset` to add all instances of `TermSet` within a given root container. @mavaylon1 [#935](https://github.com/hdmf-dev/hdmf/pull/935)
 - Added Dynamic Enumerations and Schemasheets support to `TermSet`. @mavaylon1 [#923](https://github.com/hdmf-dev/hdmf/pull/923)