You can find the release announcement here.

Language

• Breaking Change - &runs now returns 3 handles rather than 1
  • This gives more precise control over stdin, stdout, and stderr
• Breaking Change - un ° select ⊏ is now equivalent to range ⇡ length ⧻ duplicate .
• Breaking Change - auden now takes a sample rate argument, and un °auden now returns the sample rate
  • This allows you to work with audio that is not at Uiua's default sample rate
• Breaking Change - fill ⬚ no longer fills the shapes of inputs to rows ≡
  • It could leader to some unexpected behavior when trying to fill the shapes of outputs
• Breaking Change - disable pattern matching inverses resulting from under ⍜
  • This is basically never what you want
  • Pattern matching via un ° still works as normal
• • Deprecate member ∊ and add memberof ∈
  • member ∊ almost always required flipping the arguments
  • memberof ∈ is the same, but with the arguments flipped
  • In the future, member ∊ will be removed, and memberof ∈'s glyph will be changed and format to ∊
• Rename media en/decoding system functions &ime, &gife, and &ae to non-system functions imen, gifen, and auden
  • Their implementation is not actually system-dependent
  • Existing &*e will format to the new names
  • The previously deprecated &*d decoding functions have been removed (use un ° on the encoding function)
• Switch functions have been replaced with a switch ⨬ modifier
  • This makes the language more uniform
  • Code with existing switch functions in ⟨⟩s will continue to work and will format to use ⨬ and ()s
• Identifiers can now contain subscript numbers
  • They format from __ followed by some numbers
  • For example, X__1 will format to X₁
• The utf function has been renamed to utf₈
• Stabilize labels
  • You can read about them in the new Code Tactility Tutorial
• windows ◫ can now use a fill ⬚ value to pad the array
  • This is useful for convolutions
• Add new Scoped Modules
  • These allow you to create a module without creating a file
• A Call or New function inside a module can now be called via the module's name
• A module name used as a macro with ! now imports all names from the module into the macro's function's scope
  • This can shorten code when accessing many items from the same module
• Add the datetime function, which splits a time into its date and time components
• un ° shape △ now generates an array with the given shape and incrementing elements
• un ° pick ⊡ is now equivalent to range ⇡ shape △ duplicate .
• keep ▽ will now cycle counts if the counts array is shorter than the counted array
• keep ▽ now works with non-integer scalar counts to scale an array
• under ⍜ keep ▽ now allows increasing the kept array's rank
• under ⍜ now works with common by ⊸ patterns
• join ⊂ with rank differences greater than 1 can now extend the smaller array
• couple ⊟ with different ranks can now extend the smaller array
• indexof ⊗ now works with fill ⬚ to set the default for when a value is not found
• un ° join ⊂ is now easier to combine with other inverses
• repeat ⍥ can now repeat a negative number of times, which will repeat the inverse
• un ° repeat ⍥ now requires the repetition count to be inside the un ° function
  • This makes the inverted signature correct
• inventory ⍚ no longer does each ∵-like behavior
  • This got in the way more than it helped
• Non-scalar switch ⨬ and repeat ⍥ now follow the same distribution and fix ¤ rules as rows ≡
• Add the # Track caller! semantic comment, which prevents stack traces from going below the function that contains it
• Add the experimental chunks ⑄ function, which splits an array into chunks of a given size
• Add the experimental choose and permute functions for combinatorics solutions
• Add the experimental triangle ◹ modifier, which calls a function on shrinking suffixes of an array's rows
• Add the experimental orient function, which arranges an array's axes in a specified order
• Add the experimental fft function, which performs the Fast Fourier transform
  • The inverse FFT is also supported via un °
• Add the experimental astar modifier, which performs the A* pathfinding algorithm
• Add the experimental but ⤙ and with ⤚ modifiers, which are compliments to on ⟜ and by ⊸
• Add the experimental above ◠ and below ◡ modifiers, which keep all arguments to a function above or below the outputs on the stack
• Add the experimental struct macro, which generates constructor and getter functions given some names
• Un-deprecate dip ⊙ function packs
• Deprecate the experimental coordinate ⟔ function, as it is seldom needed and easy to implement with other functions
  • It can be mostly replaced with ⊢⊚⌕
• Deprecate experimental stack and array swizzles
  • They don't fit my vision for the language
• Deprecate implicit GitHub domain in "git: ..." modules
  • GitHub should not be a default
• Adjacent trace ⸮s now function as a single trace ⸮ of more values
• N+1 adjacent stack ?s now format to N trace ⸮s
• Add the &camcap system function, which captures a frame from a camera

Interpreter

• A ton of bug and crash fixes
• Some optimizations
  • Optimize length ⧻where ⊚
  • Optimize ≡□◫
  • Small optimizations to rank-1 cases of find ⌕ and mask ⦷
  • Optimize group ⊕ and partition ⊜ with ⋅identity ∘ and dip ⊙pop ◌
  • Optimize rows ≡ first ⊢
• Git modules are now cloned instead of being added as submodules
  • Add the uiua module command to list or update cloned modules
• Add some media constants:
  • Logo - the Uiua logo
  • Lena - a good example image for image processing
  • Music - a snippet of musical audio
• LSP improvements
  • Show array shapes on hover
  • Code action to insert # Experimental! comment
• REPL improvements
  • The stack is now preserved between REPL lines
    • Pass the -c/--clear flag to clear it automatically after each line
  • Add some commands, which can be listed by typing help in the repl
• Allow Uiua-specific tokens types to be disabled in the LSP

Website

• Add new Tacit Code Tutorial
• Add new Code Tactility Tutorial
• Fix a bug where running pad code that has end-of-line comments via ctrl+Enter would cause the cursor to move every time
• Remove the Uiuisms page
  • It provided a "definitive" implementation of many algorithms where the best implementation is subjective and/or context-dependent
  • It is not how I want people to approach learning Uiua
  • It is not something I am interested in maintaining