This is a pure maintenance update which fixes some bugs and adds various synergies and quality-of-life improvements to some items, such as:

- Pea Pod now works with bombs and lasers.
- Tech 44-C works with bombs and has an interaction with Book of Virtues.
- Technology 2 lasers fired by Klein Bottle no longer rotate awkwardly once the player stops firing.
- Dice Bombs can no longer activate the effects of the D7 (to prevent issues in certain boss rooms as well as for convenience) and Spindown Dice (as it's a rather unique dice item and belongs to some of the more "hidden" unlocks in the game).
- Coprophagia's creep now has a hard spawn cap and a smoother fadeout animation.
- Isaac's First Trinket now works properly again.

Version 1.6

New items:
- Chemistry Set - Isaac occasionally fires tears that spawn blue or yellow creep on the ground. If two different types of creep overlap (including creep spawned by other items), they explode and spawn a flame, poisonous cloud, a putrid room-covering vapor or freeze nearby enemies.
- Cupcake - +1 heart container, heals 1 extra red heart and contains one or two random trinkets that are swallowed upon picking up the item.
- Mutagen - Gives a small stat increase, a smaller stat decrease and occasionally a character-modifying item whenever a heart container is gained. Also spawns a health up pill on pickup.
- Dice Bombs - Bombs explode with random dice effects (excluding D4 and D100).

New trinkets:
- Marble - 10% chance of being swallowed upon taking damage while held. Gives +0.5 tears and damage once swallowed.
- Hallucinogenic Pills - Taking a pill causes a nearby red room to open (if possible and close enough) and the screen to distort.

Improvements:
- Tech-R now has synergies with The Ludovico Technique and Dr. Fetus.
- Pica has been reworked: Instead of giving a stat down in exchange for unlimited trinket smelting, there is now a 50/50 chance of gaining the trinket's effect and getting a small random stat upgrade, respectively. Gulp pills and the Smelter item still guarantee that the player gains the trinket's effect.

Version 1.5

New items:
- Coprolacria - Isaac's tears become poop-coloured and spawn liquid poop upon hitting a target or falling to the ground, which gives Isaac increased damage and tears while standing on top of it. Also makes Isaac occasionally shoot corn tears slightly off target (scaling with luck).

Fixes:
- Solved a fatal bug that made the game crash upon making a full Bag of Crafting recipe containing a rotten heart.

Version 1.4

New items:
- Isaac's First Trinket - +0.25 tears and spawns a trinket on the ground. This trinket (and others of the same type) will give +5 luck while held in addition to its normal effects. The luck is lost if the trinket is swallowed.
- Aqua Via - Isaac creates a wake of tears while moving.

Fixes and Changes:
- Fixed Magpie not appearing in the item pool.
- Added Black Powder to the Shop pool to make its synergy with The Red Stone a bit more common (feedback would be appreciated here!)
- Reduced the maggot spawn cap for Corpse Explosion from 60 to 20.
- New sprites for many items thanks to Agugar1!
- New logo

Version 1.3

New items:
- Magpie - A familiar that follows the player and flies forward in the player's shooting direction, dealing damage to targets, blocking projectiles and swallowing trinkets it passes over. Each trinket swallowed increases its size and contact damage. The magpie "poops out" the oldest trinket at the start of every floor, and cannot eat trinkets it has already eaten.

New trinkets:
- Folded Card - Using a reverse tarot card turns all normal tarot cards in the room into their reverse variants.

Changes:
- Most items now use persistent data storage, removing any strange behaviour when leaving/continuing the game.
- The Red Stone no longer consumes health when playing as The Lost or their variants.
- Guppy's Body now gives a broken heart on pickup (without replacing a heart container).
- Added a spawn cap to Corpse Explosion's maggots. (Temporary fix before overhaul.)
- Improved the way Klein Bottle handles lasers.

Hotfix 1.2

- Renamed the Philosopher's Stone to The Red Stone to avoid name conflicts with other mods
- Fixed a typo in a file that may have been the source of crashes
- Changed Corpse Explosion's creep damage to 30% of the Player's tear damage (previously 1 flat damage regardless of the damage stat)
- Created a new logo that is (hopefully) at the right resolution.

Version 1.1 changelog:

New items

- Philosopher's Stone - A complex active item that can transmute consumables and trinkets into other consumables, trinkets and even items! Be careful, as transmutations consume the user's health! See the document for more info.

- Guppy's Body - An item that gives the same tears up regardless of any multipliers and contributes to the Guppy transformation (mostly to make up for the lack of post-Rebirth Guppy items)

Changes

- Klein Bottle is now a familiar that only loops tears that collide with the ground or a wall. Unlike the old version this applies to ALL types of tears (and lasers!), including those fired by other familiars and split shots from items such as Cricket's Body and The Parasite. Its status as a familiar makes it synergize with items such as BFFS!, too.

- Pica gives small stat downs instead of stat ups when swallowing trinkets. Trinkets will also be swallowed three seconds after pickup rather than immediately.

- Addiction spawns pills every 4 instead of 3 rooms. This makes the addiction effect start before the guaranteed pill spawn of the item, reducing its viability when the player does not have any other means of getting extra pills. The addiction effect also lasts for 3 rooms (as it says in the description) instead of 2. The spawn rate of the item itself when using pills has been lowered from 2% to 0.5%.

Bugfixes
- Fixed a bug with Recursion that caused it to replace items required for progression (Polaroid/Negative, Knife Pieces, Dad's Note)