ignore color:inherit and convert double to int for level

lib/src/utils/color.dart

@@ -112,6 +112,11 @@ Color stringToColor(String? s) {
         int.parse(arr[2]), double.parse(arr[3]));
   }
 
+  // TODO: take care of "color": "inherit"
+  if (s.startsWith('inherit')) {
+    return Colors.black;
+  }
+
   if (!s.startsWith('#')) {
     throw 'Color code not supported';
   }

lib/src/widgets/raw_editor.dart

@@ -504,7 +504,12 @@ class RawEditorState extends EditorState
       Line line, DefaultStyles? defaultStyles) {
     final attrs = line.style.attributes;
     if (attrs.containsKey(Attribute.header.key)) {
-      final int? level = attrs[Attribute.header.key]!.value;
+      int level;
+      if (attrs[Attribute.header.key]!.value is double) {
+        level = attrs[Attribute.header.key]!.value.toInt();
+      } else {
+        level = attrs[Attribute.header.key]!.value;
+      }
       switch (level) {
         case 1:
           return defaultStyles!.h1!.verticalSpacing;