v0.1.6: more interpolation fixes

More interpolation fixes:

• Characters and objects now move on the game's own skeleton in the in-between frames: every model is rebuilt bone by bone from its real bone hierarchy, so joints never come apart on fast moves (no more stretched or detached arms when swinging, spinning or putting the sword away).
• Meshes the game swaps from one frame to the next (shield from the back into the hand, sword into the sheath, open hand to fist) swap at the right moment instead of showing up in the wrong place for a frame.
• Items held as separate models stay locked to the hand holding them.
• Characters, NPCs and scenery no longer vanish for a moment the first time something new is drawn (they used to be skipped while their shader was being built). The first time a new effect appears there may be a very short pause instead.
• Setup warns if the ROM's game data is not a clean USA v1.1 dump.

Updating: extract this release into a new folder and run Setup again with your ROM. Then copy data/savedata (your saves), data/textures (an HD pack) and data/config (your settings) from the old folder.

As before: no Nintendo code or data is included. Setup builds everything from your own decrypted USA v1.1 ROM.