thank you @kuba3060

gail is fixed
why you didn't tell me before

-Rework of Diplopia 2.0!
-Added a new trinket: Children's Book of Virtues
-The Blood Spider has been REMOVED
-Some settings have been changed
-The portrait of Lily in the menu has been changed (Nero asked me to do it for a very long time)
-Some descriptions in the EID and Encyclopedia have been changed
There were a bunch of some changes, but I forgot them.
Sorry for the long absence of updates. I (RealexTea) got sick and now I am healthy, although I feel some fatigue. Now updates will be more frequent. Have a good game for everyone!

-Added ALL synergies with Book of Virtues
-The mechanical heart now synergizes with the tainted Bethany
-Fixed bugs with crashes and lags when playing for Gail and displaying the interface (I hope)
-Fixed bugs related to "Red Bombs" and active items (Placebo, D infinity, Jar of Wisps and others)
-Toothpaste now reduces the damage multiplier (once)

-13 new potions for Book of Alchemy
-Added a hint to the Keychains item
-"Tofu fan" fixed
-"Medal of Pride" fixed
-Changes in the spell interface code (A bunch of fixes in the co-op)
-Now everyone has their own potions
-Now you need to drink potions on the space
There are still a lot of changes... I need to write them down somewhere already, and not recall them from memory...

-Added a new (old) item: Book of Alchemy (Thanks to everyone who drew resprites!)
Now it has a different, cooler mechanics. The next item returned will be... Epic Collector!
-Changed the problem with eternal spells with a price tag above 30 (Thanks Sans Undertale for reporting)
-Some item pools have been changed
-Improved compatibility with the "Sewing Machine" mod

There were some other changes, but... I forgot which ones

Now, after defeating the boss, the trapdoor and the pedestal spawns. Thanks to Lalhs for reporting this bug.

I forgor to add "keychains" to the boss pool -_-
sorry

-Added a new item: Keychains (Rework of exchange of trinkets, hehe)
-Fixed: Blue Marker, Dead Lizard
-Fixed and improved mini icons of items
-Updated sprites of Diplopia 2.0 and Respell
-Added Gail's Birthlight
-Fixed the Wand interface when playing for Tainted/Tarnished Isaac
-List of changes related to the Gail: Champions give twice as much mana; Mana for bosses depends on their HP; Eternal spells cost twice as much; You can drop spell on CTRL
-Fixed descriptions of trinkets and the Shiva Sign in EID

-Synergy of Coloboma and Brimstone, Technologies and Montezuma fixed (Removed)
-A few changes in Dead Sea Scrolls
-Now, during Lily's complete invulnerability, a shield is shown on the top left of her, and not a Spider Agility icon
-Added a new trinket, "Kiss"
-Now, if you have the "Unique Minisaacs" mod enabled, then Gail and Lily will also have unique Minisaacs
-The mod's weight is slightly reduced