Config: update changelog and version

Author: CaiJingLong

library/CHANGELOG.md

@@ -1,6 +1,7 @@
 # CHANGELOG
 
 - [CHANGELOG](#changelog)
+  - [2.1.2](#212)
   - [2.1.1](#211)
   - [2.1.0](#210)
   - [2.0.0](#200)
@@ -12,6 +13,12 @@
   - [0.1.1](#011)
   - [0.1.0](#010)
 
+## 2.1.2
+
+Fix：
+
+- Support gif 87a type [#23] [#24].
+
 ## 2.1.1
 
 - fix: remove debug value print calls from `jpeg_decoder` by @ZaLiTHkA in <https://github.com/CaiJingLong/dart_image_size_getter/pull/21>

library/pubspec.yaml

@@ -1,6 +1,6 @@
 name: image_size_getter
 description: Get image width and height, the library does not completely decode the image file, just read the metadata to get the image width and height.
-version: 2.1.1
+version: 2.1.2
 homepage: https://github.com/CaiJingLong/dart_image_size_getter/tree/master/library
 # publish_to: https://pub.dev