Changes in write_xlsx-0.85.7 vs Changes in write_xlsx-0.85.8

@@ -1,6 +1,9 @@
 Change history of write_xlsx rubygem.
 
[phone] v0.85.8
+   apply pull-request #58 and #52
+
 2019-06-20 v0.85.7
    apply pull-request #26
 
 2019-02-10 v0.85.6
    Fix work well in ms windows.