Update with changelog from 2.10.3

Author: joshmoore

docs/release.rst

@@ -21,12 +21,26 @@ Enhancements
 * Create a Base store class for Zarr Store.
   By :user:`Greggory Lee <grlee77>`; :issue:`789`.
 
+.. _release_2.10.3:
+
+2.10.3
+------
+
 Bug fixes
 ~~~~~~~~~
 
 * N5 keywords now emit UserWarning instead of raising a ValueError.
   By :user:`Boaz Mohar <boazmohar>`; :issue:`860`.
 
+* blocks_to_decompress not used in read_part function.
+  By :user:`Boaz Mohar <boazmohar>`; :issue:`861`.
+
+* defines blocksize for array, updates hexdigest values.
+  By :user:`Andrew Fulton <andrewfulton9>`; :issue:`867`.
+
+* Fix test failure on Debian and conda-forge builds.
+  By :user:`Josh Moore <joshmoore>`; :issue:`871`.
+
 .. _release_2.10.2:
 
 2.10.2