v0.3.0

Breaking

• The .lgb binary board format is now version 2, which stores per-pin negation. Version 1 files
  are rejected with unsupported version; re-export them from JSON. JSON boards without the new
  fields load unchanged.

Added

• Per-pin negation: negatedInputs/negatedOutputs on a component descriptor list the pin indices
  to invert, in JSON boards and in the Node and WASM bindings.
• A negated clock or enable pin inverts its trigger sense: a negated clock makes the component
  falling-edge triggered, with no spurious edge at power-on.

Performance

• Negation is always applied, even on boards that don't use it, which costs some throughput (about
  9% on the real-world CPU benchmark board).