bump version in code

lucaong · lucaong · commit b14c8297fdeb · 2018-10-09T14:50:35.000+02:00
diff --git a/src/immutable/version.cr b/src/immutable/version.cr
@@ -1,3 +1,3 @@
 module Immutable
-  VERSION = "0.1.21"
+  VERSION = "0.1.22"
 end
