Implement support for em in dx and dy attributes and font props for G element

elements/G.js

@@ -1,14 +1,18 @@
 import React from 'react';
 import createReactNativeComponentClass from 'react-native/Libraries/Renderer/src/renderers/native/createReactNativeComponentClass';
 import Shape from './Shape';
-import {pathProps} from '../lib/props';
+import {pathProps, fontProps} from '../lib/props';
 import {GroupAttributes} from '../lib/attributes';
 import extractProps from '../lib/extract/extractProps';
+import {extractFont} from '../lib/extract/extractText';
 
 export default class extends Shape{
     static displayName = 'G';
 
-    static propTypes = pathProps;
+    static propTypes = {
+        ...pathProps,
+        ...fontProps,
+    };
 
     setNativeProps = (...args) => {
         this.root.setNativeProps(...args);
@@ -19,6 +23,7 @@ export default class extends Shape{
 
         return <RNSVGGroup
             {...extractProps(props, this)}
+            font={extractFont(props)}
             ref={ele => {this.root = ele;}}
         >
             {props.children}