Addon works as of most recent version. For anyone who wants to make it more range, max is probably 64 cuz off how minecraft is. To edit it turn the .mcaddon to a .zip, go into the bp, scripts, and copy or cut main.js to your downloads. Turn main.js to main.txt by renaming it, change 32 to how much range you want, and save it as main.js, placing it back into scripts and rename the mod back to .mcaddon.
This is really cool
[Edit: so it works, but only for placing blocks. It would be amazing if this worked for attacking and using items]