modern_kanto 0.1.0

First beta. Four separately switchable pieces; the ones that move the
balance are off by default.

• SPLIT (off) — the Gen 4 physical/special split, as per-move data.
  Damage.categoryOf already prefers a move's own category over its type's,
  so this is 17 registry patches rather than a damage hook, and it composes
  with anything else that touches a battle.
• TYPE CHART (GEN 1) — the three rows Gen 2 rebalanced.
• GHOST FIX (on) — Ghost does 0x to Psychic in Gen 1, where 2x was
  intended. On by default because it is a bug, not a balance decision; the
  other three rows are taste, and live behind TYPE CHART.
• SMART AI (off) — patches the vanilla LAYER_3 type pass, whose own
  comment admits it "only reads the FIRST matching row -- no dual-type
  product". It multiplies them out, so 2x against an immune second type
  reads as immune instead of as a good idea.
• ATLAS (on) — a screen over the merged encounter data: every area, the
  species in it with their level range, and whether you own one yet.