Bump version; Update changelog

CHANGELOG.md

@@ -1,10 +1,18 @@
 # Changelog
 
 ## [Unreleased]
+
+## [2.13.0] - 2020-04-22
 ### Added
 - Fallback images.
 - [padding](https://docs.imgproxy.net/#/generating_the_url_advanced?id=padding) processing option.
 
+### Changed
+- Optimized memory usage. Especially when dealing with animated images.
+
+### Fixed
+- Fix crashes during animated images processing.
+
 ## [2.12.0] - 2020-04-07
 ### Addded
 - `IMGPROXY_PATH_PREFIX` config.

main.go

@@ -11,7 +11,7 @@ import (
 	"time"
 )
 
-const version = "2.12.0"
+const version = "2.13.0"
 
 type ctxKey string