doc: add changelogs for buffer

PR-URL: #11489
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Sam Roberts <vieuxtech@gmail.com>
Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Italo A. Casas <me@italoacasas.com>

doc/api/buffer.md

@@ -138,6 +138,15 @@ extra care *must* be taken in order to avoid introducing security
 vulnerabilities into an application.
 
 ## Buffers and Character Encodings
+<!-- YAML
+changes:
+  - version: v6.4.0
+    pr-url: https://github.com/nodejs/node/pull/7111
+    description: Introduced `latin1` as an alias for `binary`.
+  - version: v5.0.0
+    pr-url: https://github.com/nodejs/node/pull/2859
+    description: Removed the deprecated `raw` and `raws` encodings.
+-->
 
 `Buffer` instances are commonly used to represent sequences of encoded characters
 such as UTF-8, UCS2, Base64 or even Hex-encoded data. It is possible to
@@ -188,6 +197,12 @@ that the server actually returned win-1252-encoded data, and using `'latin1'`
 encoding may incorrectly decode the characters.
 
 ## Buffers and TypedArray
+<!-- YAML
+changes:
+  - version: v3.0.0
+    pr-url: https://github.com/nodejs/node/pull/2002
+    description: The `Buffer`s class now inherits from `Uint8Array`.
+-->
 
 `Buffer` instances are also [`Uint8Array`] instances. However, there are subtle
 incompatibilities with the TypedArray specification in ECMAScript 2015.
@@ -298,6 +313,13 @@ It can be constructed in a variety of ways.
 ### new Buffer(array)
 <!-- YAML
 deprecated: v6.0.0
+changes:
+  - version: v7.2.1
+    pr-url: https://github.com/nodejs/node/pull/9529
+    description: Calling this constructor no longer emits a deprecation warning.
+  - version: v7.0.0
+    pr-url: https://github.com/nodejs/node/pull/8169
+    description: Calling this constructor emits a deprecation warning now.
 -->
 
 > Stability: 0 - Deprecated: Use [`Buffer.from(array)`] instead.
@@ -315,7 +337,18 @@ const buf = new Buffer([0x62, 0x75, 0x66, 0x66, 0x65, 0x72]);
 
 ### new Buffer(arrayBuffer[, byteOffset [, length]])
 <!-- YAML
+added: v3.0.0
 deprecated: v6.0.0
+changes:
+  - version: v7.2.1
+    pr-url: https://github.com/nodejs/node/pull/9529
+    description: Calling this constructor no longer emits a deprecation warning.
+  - version: v7.0.0
+    pr-url: https://github.com/nodejs/node/pull/8169
+    description: Calling this constructor emits a deprecation warning now.
+  - version: v6.0.0
+    pr-url: https://github.com/nodejs/node/pull/4682
+    description: The `byteOffset` and `length` parameters are supported now.
 -->
 
 > Stability: 0 - Deprecated: Use
@@ -360,6 +393,13 @@ console.log(buf);
 ### new Buffer(buffer)
 <!-- YAML
 deprecated: v6.0.0
+changes:
+  - version: v7.2.1
+    pr-url: https://github.com/nodejs/node/pull/9529
+    description: Calling this constructor no longer emits a deprecation warning.
+  - version: v7.0.0
+    pr-url: https://github.com/nodejs/node/pull/8169
+    description: Calling this constructor emits a deprecation warning now.
 -->
 
 > Stability: 0 - Deprecated: Use [`Buffer.from(buffer)`] instead.
@@ -386,6 +426,13 @@ console.log(buf2.toString());
 ### new Buffer(size)
 <!-- YAML
 deprecated: v6.0.0
+changes:
+  - version: v7.2.1
+    pr-url: https://github.com/nodejs/node/pull/9529
+    description: Calling this constructor no longer emits a deprecation warning.
+  - version: v7.0.0
+    pr-url: https://github.com/nodejs/node/pull/8169
+    description: Calling this constructor emits a deprecation warning now.
 -->
 
 > Stability: 0 - Deprecated: Use [`Buffer.alloc()`] instead (also see
@@ -419,6 +466,13 @@ console.log(buf);
 ### new Buffer(string[, encoding])
 <!-- YAML
 deprecated: v6.0.0
+changes:
+  - version: v7.2.1
+    pr-url: https://github.com/nodejs/node/pull/9529
+    description: Calling this constructor no longer emits a deprecation warning.
+  - version: v7.0.0
+    pr-url: https://github.com/nodejs/node/pull/8169
+    description: Calling this constructor emits a deprecation warning now.
 -->
 
 > Stability: 0 - Deprecated:
@@ -508,6 +562,10 @@ A `TypeError` will be thrown if `size` is not a number.
 ### Class Method: Buffer.allocUnsafe(size)
 <!-- YAML
 added: v5.10.0
+changes:
+  - version: v7.0.0
+    pr-url: https://github.com/nodejs/node/pull/7079
+    description: Passing a negative `size` will now throw an error.
 -->
 
 * `size` {Integer} The desired length of the new `Buffer`
@@ -606,6 +664,14 @@ A `TypeError` will be thrown if `size` is not a number.
 ### Class Method: Buffer.byteLength(string[, encoding])
 <!-- YAML
 added: v0.1.90
+changes:
+  - version: v7.0.0
+    pr-url: https://github.com/nodejs/node/pull/8946
+    description: Passing invalid input will now throw an error.
+  - version: v5.10.0
+    pr-url: https://github.com/nodejs/node/pull/5255
+    description: The `string` parameter can now be any `TypedArray`, `DataView`
+                 or `ArrayBuffer`.
 -->
 
 * `string` {String | Buffer | TypedArray | DataView | ArrayBuffer} A value to
@@ -886,6 +952,10 @@ console.log(buf.toString('ascii'));
 ### buf.compare(target[, targetStart[, targetEnd[, sourceStart[, sourceEnd]]]])
 <!-- YAML
 added: v0.11.13
+changes:
+  - version: v5.11.0
+    pr-url: https://github.com/nodejs/node/pull/5880
+    description: Additional parameters for specifying offsets are supported now.
 -->
 
 * `target` {Buffer} A `Buffer` to compare to
@@ -1066,6 +1136,10 @@ console.log(buf1.equals(buf3));
 ### buf.fill(value[, offset[, end]][, encoding])
 <!-- YAML
 added: v0.5.0
+changes:
+  - version: v5.7.0
+    pr-url: https://github.com/nodejs/node/pull/4935
+    description: The `encoding` parameter is supported now.
 -->
 
 * `value` {String | Buffer | Integer} The value to fill `buf` with
@@ -1144,6 +1218,11 @@ console.log(buf.includes('this', 4));
 ### buf.indexOf(value[, byteOffset][, encoding])
 <!-- YAML
 added: v1.5.0
+changes:
+  - version: v5.7.0, v4.4.0
+    pr-url: https://github.com/nodejs/node/pull/4803
+    description: When `encoding` is being passed, the `byteOffset` parameter
+                 is no longer required.
 -->
 
 * `value` {String | Buffer | Integer} What to search for
@@ -1710,6 +1789,15 @@ console.log(buf.readUIntBE(1, 6).toString(16));
 ### buf.slice([start[, end]])
 <!-- YAML
 added: v0.3.0
+changes:
+  - version: v7.1.0, v6.9.2
+    pr-url: https://github.com/nodejs/node/pull/9341
+    description: Coercing the offsets to integers now handles values outside
+                 the 32-bit integer range properly.
+  - version: v7.0.0
+    pr-url: https://github.com/nodejs/node/pull/9101
+    description: All offsets are now coerced to integers before doing any
+                 calculations with them.
 -->
 
 * `start` {Integer} Where the new `Buffer` will start. **Default:** `0`