Modified the values of the EmphasisLevel and HeadingLevel class constants.

Author: Martin Brecht-Precht

src/Common/EmphasisLevel.php

@@ -10,7 +10,7 @@
 class EmphasisLevel
 {
 
-	const LEVEL_1 = 'LEVEL_1';
-	const LEVEL_2 = 'LEVEL_2';
+	const LEVEL_1 = 1;
+	const LEVEL_2 = 2;
 
 }

src/Common/HeadingLevel.php

@@ -10,11 +10,11 @@
 class HeadingLevel
 {
 
-	const LEVEL_1 = 'LEVEL_1';
-	const LEVEL_2 = 'LEVEL_2';
-	const LEVEL_3 = 'LEVEL_3';
-	const LEVEL_4 = 'LEVEL_4';
-	const LEVEL_5 = 'LEVEL_5';
-	const LEVEL_6 = 'LEVEL_6';
+	const LEVEL_1 = 1;
+	const LEVEL_2 = 2;
+	const LEVEL_3 = 3;
+	const LEVEL_4 = 4;
+	const LEVEL_5 = 5;
+	const LEVEL_6 = 6;
 
 }