diff --git a/cf-lib/changelog.txt b/cf-lib/changelog.txt
index f658edc..d9e2ead 100644
--- a/cf-lib/changelog.txt
+++ b/cf-lib/changelog.txt
@@ -1,20 +1,4 @@
 ---------------------------------------------------------------------------------------------------
-Version: 1.4.0
-Date: 10.01.2026
-  Changes:
-    - Add Entity.setFilename
----------------------------------------------------------------------------------------------------
-Version: 1.3.0
-Date: 24.12.2025
-  Changes:
-    - :apply() returns self
-    - Add Recipe:addIndicatorIcon()
----------------------------------------------------------------------------------------------------
-Version: 1.2.0
-Date: 14.12.2025
-  Changes:
-    - Add class Entity
----------------------------------------------------------------------------------------------------
 Version: 1.1.0
 Date: 12.12.2025
   Changes:
diff --git a/cf-lib/data/Entity.lua b/cf-lib/data/Entity.lua
deleted file mode 100644
index 10172ad..0000000
--- a/cf-lib/data/Entity.lua
+++ /dev/null
@@ -1,46 +0,0 @@
---- Utility class for entity prototype definitions
---- @class Entity
-local Entity = {}
-
---- Generates a selection box definition using width and height of the entity in tiles.
---- @param width number The width of the entity in tiles
---- @param height number The height of the entity in tiles
---- @return table A table containing the selection box definition
-Entity.selectionBox = function(width, height)
-    return {
-        { -width / 2, -height / 2 },
-        { width / 2, height / 2 }
-    }
-end
-
---- Generates a collision box definition using width and height of the entity in tiles.
---- @param width number The width of the entity in tiles
---- @param height number The height of the entity in tiles
---- @param margin number The margin to apply to the collision box compared to the selection box (default: 0.3)
---- @return table A table containing the collision box definition
-Entity.collisionBox = function(width, height, margin)
-    margin = margin or 0.1
-    return {
-        { -width / 2 + margin, -height / 2 + margin },
-        { width / 2 - margin, height / 2 - margin }
-    }
-end
-
---- Sets the file name on a picture considering various formats.
---- If sheets or layers are found, use the optional param to select the right one.
---- @param sprite table The sprite to replace the filename in
---- @param filename string The new filename
---- @param sheetLayer number The sheet or layer index to use. Defaults to 1.
-Entity.setFilename = function(sprite, filename, sheetLayer)
-    if sprite.filename then
-        sprite.filename = filename
-    elseif sprite.sheet then
-        sprite.sheet.filename = filename
-    elseif sprite.sheets then
-        sprite.sheets[sheetLayer or 1].filename = filename
-    elseif sprite.layers then
-        sprite.layers[sheetLayer or 1].filename = filename
-    end
-end
-
-return Entity
\ No newline at end of file
diff --git a/cf-lib/data/Item.lua b/cf-lib/data/Item.lua
index a7d753c..5934a72 100644
--- a/cf-lib/data/Item.lua
+++ b/cf-lib/data/Item.lua
@@ -32,7 +32,6 @@ end
 --- Applies the item to the game
 function Item:apply()
     data:extend({ self.prototype })
-    return self
 end
 
 --- Assigns data to the item
@@ -51,7 +50,7 @@ function Item:merge(data)
     return self
 end
 
---- Sets the weight of the item calculated from given count per rocket
+--- Sets the weight of the item calculated from given count per rocket.
 --- @param count number The amount of items that fit into a rocket
 function Item:itemsPerRocket(count)
     self.prototype.weight = (1000 / count) * kg
diff --git a/cf-lib/data/Recipe.lua b/cf-lib/data/Recipe.lua
index 32a9d67..213aa14 100644
--- a/cf-lib/data/Recipe.lua
+++ b/cf-lib/data/Recipe.lua
@@ -32,7 +32,6 @@ end
 --- Applies the recipe to the game
 function Recipe:apply()
     data:extend({ self.prototype })
-    return self
 end
 
 --- Assigns data to the recipe
@@ -226,26 +225,4 @@ function Recipe:clone(name)
     return Recipe:new(clone)
 end
 
---- Adds a small icon in the corner of the regular item
---- It currently assumes an icon_size of 64
---- @param icon string The filename of the icon
---- @param position string The position of the icon. One of ["top-left", "top-right", "bottom-left", "bottom-right"]. Defaults to "bottom-right".
-function Recipe:addIndicatorIcon(icon, position)
-    local icons = self.prototype.icons or {}
-    local mainIcon = icons[1] or self.prototype.icon or nil
-    if not mainIcon then
-        local result = self.prototype.results[1]
-        local resultItem = data.raw[result.type][result.name]
-        icons = resultItem.icons or {{ icon = resultItem.icon }}
-    end
-    local shift = { 8, 8 }
-    if position == "top-left" then shift = { -8, -8 } end
-    if position == "top-right" then shift = { 8, -8 } end
-    if position == "bottom-left" then shift = { -8, 8 } end
-    table.insert(icons, { icon = icon, scale = 0.25, shift = shift })
-    self.prototype.icons = icons
-    log(serpent.block(self.prototype.icons))
-    return self
-end
-
 return Recipe
diff --git a/cf-lib/data/Technology.lua b/cf-lib/data/Technology.lua
index 3dd3b48..13a1dd9 100644
--- a/cf-lib/data/Technology.lua
+++ b/cf-lib/data/Technology.lua
@@ -40,7 +40,6 @@ end
 --- Applies the technology to the game
 function Technology:apply()
     data:extend({ self.prototype })
-    return self
 end
 
 --- Assigns data to the technology
diff --git a/cf-lib/info.json b/cf-lib/info.json
index 77044a6..69d149c 100644
--- a/cf-lib/info.json
+++ b/cf-lib/info.json
@@ -1,6 +1,6 @@
 {
    "name": "cf-lib",
-   "version": "1.4.0",
+   "version": "1.1.0",
    "title": "cackling fiends library",
    "description": "Because I'd like to have my own library :-)",
    "author": "cackling fiend",