Added SCU Relay
Special kind of battery box: paired items with 100K storage and common SCU pool
Updating one relay's charge automatically updates the other's.
Works cross-world right now but may require an upgrade to do this in future.
version => 0.99.2-SNAPSHOT
Merge branch 'master' of github.com:desht/sensibletoolbox
Added Silky Breaker Module
Upgrade to the IR Breaker Mod which silk touches blocks.
Re-did SCU relay ID tracking
Now non-static tracker object is used, and random ID is no longer used; instead the tracker stores the next available ID.  Tracker object is generic and could be used by other objects in future.
Added Subspace Transponder
Now used for crafting Hypersender Module (instead of Advanced Sender & Integrated Circuit)
Also must be placed in (both sides of a) SCU Relay if you want it to work cross-world
Fix NPE in recipe book (drag with item on cursor over empty ingredient slot)
Typo fix in Javadoc
SCU Relay work
GUI improvements; GUI now has info label showing ID and location of partner relay (if placed)
Relay with ID 0 will not function (this would happen if you get a relay directly from the recipe book or via /stb give - always craft a pair of unlinked relays!)