docs: add version metadata

docs/array/cartesianProduct.mdx

@@ -1,6 +1,7 @@
 ---
 title: cartesianProduct
 description: Perform a Cartesian product of arrays
+since: 12.3.0
 ---
 
 ### Usage

docs/async/parallel.mdx

@@ -22,7 +22,7 @@ const users = await _.parallel(3, userIds, async userId => {
 
 ### Interrupting
 
-Processing can be manually interrupted. Pass an `AbortController.signal` via the `signal` option. When the signal is aborted, no more calls to your callback will be made. Any in-progress calls will continue to completion, unless you manually connect the signal inside your callback. In other words, `parallel` is only responsible for aborting the array loop, not the async operations themselves.
+Since v12.3.0, processing can be manually interrupted. Pass an `AbortController.signal` via the `signal` option. When the signal is aborted, no more calls to your callback will be made. Any in-progress calls will continue to completion, unless you manually connect the signal inside your callback. In other words, `parallel` is only responsible for aborting the array loop, not the async operations themselves.
 
 When `parallel` is interrupted by the signal, it throws a `DOMException` (even in Node.js) with the message `This operation was aborted` and name `AbortError`.
 

docs/async/retry.mdx

@@ -14,7 +14,7 @@ The `retry` function runs an async function and retries it if it fails. You can
 - `delay` is milliseconds to sleep between retries
 - `backoff` is a function called to calculate the delay between retries
   - It receives the attempt number (starting with `1`) and returns the delay in milliseconds.
-- `signal` allows you to pass an `AbortController.signal` to interrupt the retry operation
+- `signal` (v12.3.0+) allows you to pass an `AbortController.signal` to interrupt the retry operation
 
 ```ts
 import * as _ from 'radashi'

docs/typed/isClass.mdx

@@ -1,6 +1,7 @@
 ---
 title: isClass
 description: Determine if a value was declared with `class` syntax
+since: 12.3.0
 ---
 
 ### Usage

docs/typed/isUndefined.mdx

@@ -1,6 +1,7 @@
 ---
 title: isUndefined
 description: 'Determine if a value is undefined'
+since: 12.3.0
 ---
 
 ### Usage

src/array/cartesianProduct.ts

@@ -23,6 +23,7 @@ type ReadonlyArray2D<T> = readonly (readonly T[])[]
  * //   ['blue', 'small', 'slow']
  * // ]
  * ```
+ * @version 12.3.0
  */
 export function cartesianProduct<const T extends ReadonlyArray2D<any>>(
   ...arrays: [...T]

src/typed/isClass.ts

@@ -13,6 +13,7 @@ import { isFunction, type Class, type StrictExtract } from 'radashi'
  * isClass('abc') // => false
  * isClass({}) // => false
  * ```
+ * @version 12.3.0
  */
 export function isClass<T>(value: T): value is ExtractClass<T> {
   return (

src/typed/isUndefined.ts

@@ -7,6 +7,7 @@
  * isUndefined(undefined) // => true
  * isUndefined(null) // => false
  * ```
+ * @version 12.3.0
  */
 export function isUndefined(value: unknown): value is undefined {
   return typeof value === 'undefined'