Release v2.15.0.6

The following are the changes in this release:

     Thanks to GitHub user @ashamedbit, a long standing memory leak in
     zrandom.c has been fixed.

Author: lcn2

Makefile.config

@@ -1243,7 +1243,7 @@ EXT=
 
 # The calc version in the form of x.y.z.w
 #
-VERSION= 2.15.0.5
+VERSION= 2.15.0.6
 
 # The calc major version in the form of x.y.z
 #

version.h

@@ -64,7 +64,7 @@
 #define MAJOR_VER	2	/* level 1: major library version */
 #define MINOR_VER	15	/* level 2: minor library version */
 #define MAJOR_PATCH	0	/* level 3: major software version level */
-#define MINOR_PATCH	5	/* level 4: minor software version level */
+#define MINOR_PATCH	6	/* level 4: minor software version level */
 
 
 #endif /* !INCLUDE_VERSION_H*/