Add 2.1 blog post

website/blog/2020-08-21-2.1.0.md

@@ -42,37 +42,56 @@ I am expecting this to come out exactly like it went in.
 
 ### TypeScript
 
-#### Support type annotations on catch clauses ([#8805](https://github.com/prettier/prettier/pull/8805) by [@fisker](https://github.com/fisker))
+#### Support for TypeScript 4.0
+
+- [Labeled Tuple Elements](https://devblogs.microsoft.com/typescript/announcing-typescript-4-0/#labeled-tuple-elements)
+- [Short-Circuiting Assignment Operators](https://devblogs.microsoft.com/typescript/announcing-typescript-4-0/#short-circuiting-assignment-operators)
+- [Type annotations on catch clauses](https://devblogs.microsoft.com/typescript/announcing-typescript-4-0/#unknown-on-catch)
+
+##### Labeled Tuple Elements ([#8885](https://github.com/prettier/prettier/pull/8885) by [@fisker](https://github.com/fisker), [#8982](https://github.com/prettier/prettier/pull/8982) by [@sosukesuzuki](https://github.com/sosukesuzuki))
 
 <!-- prettier-ignore -->
 ```ts
 // Input
-try {} catch (e: any) {}
+type Range = [start: number, end: number];
 
 // Prettier stable
-try {
-} catch (e) {}
+SyntaxError: Unexpected token, expected "," (1:20)
+> 1 | type Range = [start: number, end: number];
 
 // Prettier master
-try {
-} catch (e: any) {}
+type Range = [start: number, end: number];
 ```
 
-#### Support `Labeled Tuple Elements` ([#8885](https://github.com/prettier/prettier/pull/8885) by [@fisker](https://github.com/fisker), [#8982](https://github.com/prettier/prettier/pull/8982) by [@sosukesuzuki](https://github.com/sosukesuzuki))
+#### Short-Circuiting Assignment Operators ([#8982](https://github.com/prettier/prettier/pull/8982) by [@sosukesuzuki](https://github.com/sosukesuzuki))
 
-[`Labeled Tuple Elements`](https://devblogs.microsoft.com/typescript/announcing-typescript-4-0-beta/#labeled-tuple-elements)
+<!-- prettier-ignore -->
+```ts
+// Input
+a ||= b;
+
+// Prettier stable
+SyntaxError: Expression expected. (1:5)
+> 1 | a ||= b;
+
+// Prettier master
+a ||= b;
+```
+
+##### Type annotations on catch clauses ([#8805](https://github.com/prettier/prettier/pull/8805) by [@fisker](https://github.com/fisker))
 
 <!-- prettier-ignore -->
 ```ts
 // Input
-type Range = [start: number, end: number];
+try {} catch (e: any) {}
 
 // Prettier stable
-SyntaxError: Unexpected token, expected "," (1:20)
-> 1 | type Range = [start: number, end: number];
+try {
+} catch (e) {}
 
 // Prettier master
-type Range = [start: number, end: number];
+try {
+} catch (e: any) {}
 ```
 
 ## Other changes