Update 2.7.0 release notes (#708)

Author: joshmoore

docs/release.rst

@@ -1,8 +1,24 @@
 Release notes
 =============
 
-Next release (e.g. 2.7.0)
--------------------------
+2.7.0
+-----
+
+Enhancements
+~~~~~~~~~~~~
+
+* Start stop for iterator (`islice()`)
+  By :user:`Sebastian Grill <yetyetanotherusername>`; :issue:`621`.
+
+* Add capability to partially read and decompress chunks
+  By :user:`Andrew Fulton <andrewfulton9>`; :issue:`667`.
+
+
+Bug fixes
+~~~~~~~~~
+
+* Make DirectoryStore __setitem__ resilient against antivirus file locking
+  By :user:`Eric Younkin <ericgyounkin>`; :issue:`698`.
 
 * Compare test data's content generally
   By :user:`John Kirkham <jakirkham>`; :issue:`436`.
@@ -13,17 +29,14 @@ Next release (e.g. 2.7.0)
 * Fix FSStore key_seperator usage
   By :user:`Josh Moore <joshmoore>`; :issue:`669`.
 
-* Add capability to partially read and decompress chunks
-  By :user:`Andrew Fulton <andrewfulton9>`; :issue:`667`.
-
 * Simplify text handling in DB Store
   By :user:`John Kirkham <jakirkham>`; :issue:`670`.
 
 * GitHub Actions migration
   By :user:`Matthias Bussonnier <Carreau>`;
   :issue:`641`, :issue:`671`, :issue:`674`, :issue:`676`, :issue:`677`, :issue:`678`,
   :issue:`679`, :issue:`680`, :issue:`682`, :issue:`684`, :issue:`685`, :issue:`686`,
-  :issue:`687`, :issue:`695`.
+  :issue:`687`, :issue:`695`, :issue:`706`.
 
 2.6.1
 -----