Release of new version 6.4.4

Signed-off-by: Jack Cherng <jfcherng@gmail.com>

Author: jfcherng

CHANGELOG/CHANGELOG_v6.md

@@ -2,6 +2,11 @@
 ## VERSION 6  UNIFIED
 
  * Version **6.4** - Add renderer option: lineNumbers
+   * 2020-02-13 14:16  **6.4.4**  Fix SideBySide wrong new line number
+      * 7397cbe Tidy codes
+      * 215209d Fix SideBySide wrong new line number
+      * d91221d Fix documentation for outputTagAsString
+      * a7c3222 Add example image for SideBySide without line numbers
    * 2020-02-10 05:40  **6.4.3**  Better SideBySide output without line numbers
       * 067c715 Merge SideBySide insert/delete columns when lineNumbers is false
    * 2020-02-09 18:27  **6.4.2**  Fix SidebySide fatal error
@@ -124,4 +129,4 @@
       * 177146e Rename Diff to Differ
       * 0a30b27 Renderer::render() rather than Diff::render()
       * deb9ed3 Revise phpdoc
-      * d8606b7 Release of new version 5.1.0
+      * d8606b7 Release of new version 5.1.0