DEVEL_BLOG.md in rspreadsheet-0.4.4 vs DEVEL_BLOG.md in rspreadsheet-0.4.5

- old
+ new

@@ -72,13 +72,10 @@
 ## Known Issues
   * currently there is a confusing syntax @worksheet.rows(1).cells[5] which returns a cell object in SIXT column, which is not intended. It is side effecto of Row#cells returning an array
     
 ## Release notes
 
-  2017-01
-  - file can be saced to any IO now, making it suitable for creating files on fly.
-  - basic image handling implemented (issue [#24](https://github.com/gorn/rspreadsheet/issues/24))
-  - bug corrected: inserted row was not empty, but rather copy of the row below.
+  Release notes are maintaned [on github](https://github.com/gorn/rspreadsheet/releases).
     
 ## Developing this gem
 
 ### Automated testing
 