Enhancements

Have added the ability for a get() request to reload the value from disk if caching is enabled and to autoload the values into the cache at init time. Thought these might be useful for others as I wanted them for a project.

Because I use git to hold my control files, when I update that the cache is (obviously) out-of-date so it needs to reload the information.

Sorry for delay in answering didn't get notification ... well I probably did buried in all the dross that github sends me ;-)