Add Yoga 3.2 Release notes (#1761)

Summary:
Pull Request resolved: https://github.com/facebook/yoga/pull/1761

Whips up some release notes for what is new since Yoga 3.1.

https://github.com/facebook/yoga/compare/v3.1.0...v3.2.0

The relevant packages have already been published.

Reviewed By: joevilches

Differential Revision: D66679637

fbshipit-source-id: dd94e2a52f2bdc80541c331d1fb39de82669cc7a

website/src/components/FlexStyle.ts

@@ -63,7 +63,7 @@ export type FlexStyle = {
   bottom?: number | `${number}%`;
   boxSizing?: 'border-box' | 'content-box';
   direction?: 'ltr' | 'rtl';
-  display?: 'none' | 'flex';
+  display?: 'none' | 'flex' | 'contents';
   end?: number | `${number}%`;
   flex?: number;
   flexBasis?: number | 'auto' | `${number}%`;
@@ -360,12 +360,14 @@ function direction(str?: 'ltr' | 'rtl'): Direction {
   throw new Error(`"${str}" is not a valid value for direction`);
 }
 
-function display(str?: 'none' | 'flex'): Display {
+function display(str?: 'none' | 'flex' | 'contents'): Display {
   switch (str) {
     case 'none':
       return Display.None;
     case 'flex':
       return Display.Flex;
+    case 'contents':
+      return Display.Contents;
   }
   throw new Error(`"${str}" is not a valid value for display`);
 }