Fixed caret affinity on tap

packages/zefyr/lib/src/widgets/editable_rich_text.dart

   @override
   TextRange getWordBoundary(TextPosition position) {
     final localPosition = new TextPosition(
-      offset: position.offset - _node.offset,
+      offset: position.offset - _node.documentOffset,
       affinity: position.affinity,
     );
     final localRange = super.getWordBoundary(localPosition);

packages/zefyr/lib/src/widgets/selection.dart

 
     final localPoint = box.globalToLocal(globalPoint);
     final position = box.getPositionForOffset(localPoint);
-    final selection = new TextSelection.collapsed(offset: position.offset);
+    final selection = new TextSelection.collapsed(
+      offset: position.offset,
+      affinity: position.affinity,
+    );
     if (_didCaretTap && _selection == selection) {
       _didCaretTap = false;
       hideToolbar();

packages/zefyr/lib/src/widgets/theme.dart

       fontWeight: FontWeight.normal,
       color: Colors.grey.shade800,
     );
-    final padding = const EdgeInsets.only(bottom: 8.0);
+    final padding = const EdgeInsets.only(bottom: 16.0);
     final boldStyle = new TextStyle(fontWeight: FontWeight.bold);
     final italicStyle = new TextStyle(fontStyle: FontStyle.italic);
     final linkStyle =
           height: 1.25,
           fontWeight: FontWeight.w600,
         ),
-        padding: EdgeInsets.only(bottom: 8.0, top: 16.0),
+        padding: EdgeInsets.only(bottom: 8.0, top: 8.0),
       ),
       level3: StyleTheme(
         textStyle: TextStyle(
           height: 1.25,
           fontWeight: FontWeight.w600,
         ),
-        padding: EdgeInsets.only(bottom: 8.0, top: 16.0),
+        padding: EdgeInsets.only(bottom: 8.0, top: 8.0),
       ),
     );
   }