Updated the compatibility matrix

Author: peteeckel

COMPATIBILITY.md

@@ -12,6 +12,7 @@
 | 1.4.0   | 4.3.2                  | 4.3.7                  |
 | 1.4.1-7 | 4.3.2                  | 4.4.10                 |
 | 1.5.0-1 | 4.5.0                  | 4.5.1                  |
-| 1.5.2-3 | 4.5.2                  | 4.5.x                  |
-| 1.5.4   | 4.5.4                  | 4.5.x                  |
-| 1.5.5-6 | 4.5.0                  | 4.5.x                  |
+| 1.5.2-3 | 4.5.2                  | 4.5.0-6                |
+| 1.5.4   | 4.5.4                  | 4.5.0-6                |
+| 1.5.5   | 4.5.0                  | 4.5.0-6                |
+| 1.5.6   | 4.5.7                  | 4.5.7+                 |