Bump version; Update changelog

CHANGELOG.md

@@ -1,5 +1,10 @@
 # Changelog
 
+## v2.2.1
+
+- Source file size limit;
+- More memory usage optimizations.
+
 ## v2.2.0
 
 - Optimized memory usage. [Memory usage tweaks](./docs/memory_usage_tweaks.md);

main.go

@@ -11,7 +11,7 @@ import (
 	_ "net/http/pprof"
 )
 
-const version = "2.2.0"
+const version = "2.2.1"
 
 type ctxKey string