I made the survivalOnly option one on/off thing instead of per-reward because it wasn't really that useful and just cluttered the configuration. If, for some reason, that feature was useful to have per-reward, let me know and I can put it back. I also added a bunch of new commands, including:
/cmr addblock [block]: Adds a block to the list of reward-triggering blocks. You can use it either by specifying the name of the block you want to add, or just by holding it in your hand. Similarly...
/cmr removeblock [block]: This removes a block from the list in the same manner as /cmr addblock.
/cmr listblocks: Lists all the blocks that trigger rewards in a nice, readable format.

There are many more. You can see the full list on the main page, or in-game with /cmr help (which now features a bright new look!)
This update hasn't been tested a ton, but a fair amount. If you come across any bugs, please post in the discussion thread or send me a PM and I'll get back to you as soon as I can.

While I'm at it, thank you for the kind words and reviews! I wasn't expecting this plugin to actually be used by more than one person! Thanks!!