Cached v0.0.2 -

Overview of changes:

 *  cached() will not always create cache

    Turns out caching *any* result is not the best approach as it means
    failures will keep manifesting in cache.  New version solves this by
    caching only if exit status is zero.  This can be overrided per
    call.

mkit.ini

@@ -1,5 +1,5 @@
 [project]
-    version     = 0.0.1
+    version     = 0.0.2
     name        = Cached
     tagline     = Cached (maybe) command execution
     pkgname     = shellfu-bash-cached