Merge back to ziontab version

[scrumit]

Is there any chance that this and the original could be merged back.

You have documented things well, but there have no changes for a while.

If this had been forked with github we could have seen the changes. Now I'm not sure what effort is needed to do this.

[perusio]

Why merge? His version has less features, e.g., I have had upsert since the beginning. Also the way he defines the package is way outdated in terms of Lua.