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Everything since 0.2.2. The short version: trainer battles now show the enemy's exact stats, the damage numbers account for badges, screens and abilities, and the mod keeps a ledger of your own Pokémon.

Exact enemy stats

Trainer battles show the enemy's exact stats. Every trainer's Pokémon is generated by the game from a fixed table, so its IVs and nature are knowable rather than a range.
Where two trainers genuinely collide the mod says so instead of guessing, and a trainer's fallen Pokémon narrow which of two identical twins the survivor is.
Fixed: a send-out counted more than once, which read the table at the wrong party slot.
Fixed: male and female SWIMMERs (and every gendered trainer class) were treated as the same trainer.

Damage, catch odds and the FIGHT menu

The FIGHT menu is annotated: every move gets a damage band, KO odds and hit chance, computed with the game's own arithmetic rather than an approximation.
Gym badges are applied — and it asks which ones you hold, not how many. Boulder boosts Attack, Soul Defence, Volcano both special stats, and Thunder is +10% Speed at turn order, which decides who moves first.
REFLECT and LIGHT SCREEN are read and subtracted. They halve what the other side deals and nothing on the HP box says so, which is how a "certain" KO used to hit and leave the target standing.
Abilities that change damage are applied — THICK FAT (DEWGONG, and any SNORLAX that has it) halves Fire and Ice attacks, plus GUTS, HUGE POWER, PURE POWER, HUSTLE and MARVEL SCALE.
Once the ledger knows one of your stats, the panel shows the number instead of a range, and the damage numbers use it.
Multi-hit moves get KO odds over the whole turn, and a move that can only kill on a critical hit says so rather than showing an impossible-looking chance.
Low Kick's power is computed from the target's real weight.
The catch strip stops rounding 99.9% up to 100%.
Transform is followed: a Ditto that copied your Raichu is shown as what it turned into.

Your Pokémon

A ledger of your own Pokémon: one entry per individual, learned from battles and summary screens, with its stats at every level it has been seen at.
A "Your Pokémon" window listing them, with a card for editing an entry the reader got wrong.
A nicknamed Pokémon finally gets a panel — it asks which species it is, once, and remembers.
Each entry carries its ability.
New: erase this save's data, at the bottom of Your Pokémon. Two presses, and the prompt names exactly what would go — for starting a new playthrough without the old one's records haunting it. Your panel positions and dex preferences are kept.

Double battles and the Safari Zone

Double battles work: all four Pokémon are read, each gets a panel, and damage is worked out against each enemy separately.
The Safari Zone knows what to throw: bait, rock or ball, with the odds for each.

Pokédex

A Pokédex checklist in the mod's settings, in dex order, switchable between Kanto and National.
Hovering a row answers "where do I find this", with the best odds first.
Evolving a Pokémon marks it caught, and the dex can be unpinned so it steps aside with the overlay.
Fixed: MR. MIME had no panel, no catch rate and no caught mark, ever.

Reading the game

The reader knows which situation the game is in — overworld, wild battle, trainer battle, Safari — instead of guessing from what is on screen.
Locations are read from the screens that announce them, so the route panel follows you.
A revived fossil is noticed and recorded, though it is never battled or caught.
The picture tracker was rebuilt around what the canvas can actually be, and re-locks by itself after a lockscreen.
Gender is settled from the species where only one is possible, and read reliably where it is not.
Fixed: names whose letters touch, names with one unreadable letter, and evolutions that registered the wrong species.
Fixed: the Sevii Islands' outdoor areas claimed there were no wild Pokémon.
Fixed: the status pill could invent a paralysis from the HP box bobbing.
Fixed: the FIGHT menu's borders and hover panel blinked at the read rate.

Panels

The windows can be dragged anywhere, and stay where you put them across restarts.
Each panel can be switched on or off on its own.
Type names draw in their own colours, and a species name underlines under the pointer — clicking it opens its wiki page.
Stat changes reset when any battle ends, rather than on a timer.

Also included: an emulator's window can be read as the picture instead of a capture card. That one needs a newer version of the app than is currently published.