Update README-developers.md

[skip ci]

Author: 304NotModified

README-developers.md

@@ -9,4 +9,6 @@ How to release a new version
   2. Hover "Nuget.org & SymbolSource.org" and press "update"
   3. Hover proper build and press "publish"
 4. Check/update changelog in NuGet (if you have proper rights)   
-5. Create a GitHub release.   (tag should start with `v`)
+5. Create a GitHub release.   (tag should start with `v`). Copy (and edit) changelog from NuGet
+6. Close GitHub milestone
+7. Optional: Twitter