v6 release.

- the "protect" option is now a config file only setting
- "ticks" config file option allows you to change the interval
  at which the plugin runs, so it can be slowed down further
Strip data bytes when needed.

- stripping data byte prevents us from randomly degrading into
  podzol or colored clay.
- degrade into mossy cobblestone in taiga's.
- consider mossy cobblestone a naturally degrading material as it
  occurs in nature.