ZenScroll

- Add JEI support. Scroll groups now appear in JEI.

- Add a ton of new ZenScript functions:

  - should be largely backwards compatible apart from one method name change (remove -> removeFromAll)

  - new ScrollGroup zenclass to import if you want!

  - register "processor functions" that manipulate scrolled stacks any way you like (copy nbt tags, even crazier things...?)

  - set your scroll group to be creative only

  - iterate over all registered scroll groups

  - iterate over items in a scroll group, or modify them

  - find the scroll group containing a particular item

  - quiet the logger, if you know what you're doing

  - check the Github readme for all the details

- oops I skipped 1.2.0 \_(:D)_/