libyang2: yin printer NEW printer of the parsed schemas into YIN format (#919)


diff --git a/src/tree_schema.h b/src/tree_schema.h
index b7a8c5d..bb432e1 100644
--- a/src/tree_schema.h
+++ b/src/tree_schema.h
@@ -130,8 +130,8 @@
 typedef enum {
     LYS_OUT_UNKNOWN = 0, /**< unknown format, used as return value in case of error */
     LYS_OUT_YANG = 1,    /**< YANG schema output format */
-    LYS_OUT_YIN = 3,     /**< YIN schema output format */
     LYS_OUT_YANG_COMPILED = 2, /**< YANG schema output format of the compiled schema tree */
+    LYS_OUT_YIN = 3,     /**< YIN schema output format */
 
     LYS_OUT_TREE,        /**< Tree schema output format, for more information see the [printers](@ref howtoschemasprinters) page */
     LYS_OUT_INFO,        /**< Info schema output format, for more information see the [printers](@ref howtoschemasprinters) page */