token-js: Version bump to 0.3.0 (#3448)

* token-js: Bump version 0.3.0 for release

* Improve README with support info

Author: joncinque

token/js/FAQ.md

@@ -1,14 +1,27 @@
 # `@solana/spl-token`
 
-A TypeScript library for interacting with the SPL Token program.
+A TypeScript library for interacting with the SPL Token and Token-2022 programs.
 
 ## Links
 
 - [TypeScript Docs](https://solana-labs.github.io/solana-program-library/token/js/)
-- [FAQ (Frequently Asked Questions)](./FAQ.md)
+- [FAQs (Frequently Asked Questions)](#faqs)
 - [Install](#install)
 - [Build from Source](#build-from-source)
 
+## FAQs
+
+### How can I get support?
+
+Please ask questions in the Solana Stack Exchange: https://solana.stackexchange.com/
+
+If you've found a bug or you'd like to request a feature, please
+[open an issue](https://github.com/solana-labs/solana-program-library/issues/new).
+
+### No export named Token
+
+Please see [upgrading from 0.1.x](#upgrading-from-0.1.x).
+
 ## Install
 
 ```shell
@@ -51,3 +64,32 @@ yarn test
 ```shell
 yarn example
 ```
+
+## Upgrading
+
+### Upgrading from 0.2.0
+
+There are no breaking changes from 0.2.0, only new functionality for Token-2022.
+
+### Upgrading from 0.1.x
+
+When upgrading from spl-token 0.1.x, you may see the following error in your code:
+
+```
+import {TOKEN_PROGRAM_ID, Token, AccountLayout} from '@solana/spl-token';
+                          ^^^^^
+SyntaxError: The requested module '@solana/spl-token' does not provide an export named 'Token'
+```
+
+The `@solana/spl-token` library as of version 0.2.0 does not have the `Token`
+class. Instead the actions are split up and exported separately.
+
+To use the old version, install it with:
+
+```
+npm install @solana/[email protected]
+```
+
+Otherwise you can find documentation on how to use new versions on the
+[SPL docs](https://spl.solana.com/token) or
+[Solana Cookbook](https://solanacookbook.com/references/token.html).

token/js/README.md

@@ -1,6 +1,6 @@
 {
     "name": "@solana/spl-token",
-    "version": "0.2.0",
+    "version": "0.3.0",
     "author": "Solana Maintainers <[email protected]>",
     "repository": "https://github.com/solana-labs/solana-program-library",
     "license": "Apache-2.0",