Uiua-0.9

[shnarazk]

• &ad and &imd now return an encoding format as a string in addition to the media data
  • They are also now deprecated in favor of using un ° with &ae or &ime
• Deprecate &i, as it is no longer necessary
• Custom modifiers are now called "macros"
• Add the on ⟜ modifier, which captures a common fork ⊃ pattern in a more readable way(https://uiua.org/docs/un) to separate the first row of an array from the rest
• Deprecate this ↬ and recur ↫, as they are no longer necessary-
• eta η, pi π, tau τ and infinity ∞ are now parsed as numbers rather than functions
• Add the inventory ⍚ modifier, which iterates over the unboxed items of an array and re-boxes the results
• Change content ◇'s glyph to reflect its relationship with inventory ⍚. Code using ⊔ will continue to work and will be formatted as ◇.
• Macros with 2 or more arguments can now use ‼ at the end of their names. Macro names with any combination of ! and ‼ will be automatically parsed and formatted as ‼s followed by one ! if necessary.
• f can now be used at the beginning of planet notation shorthand for fork ⊃
• Add the pool modifier, which is identical to spawn but spawns a thread in a thread pool
• Add the &runs system function, which runs a command and returns an IO stream handle
• Add the experimental stringify modifier, which turns its function into a string without calling it
• Add the experimental signature modifier, which returns the arguments and output of its function without calling it
• Add the experimental &ffi system function, which allows calling functions from shared libraries
• Add experimental function strands. Putting a _ between two functions (or a function and a constant), is equivalent to putting them in ()s

# Experimental!
1 5 8 2
⊃(+ + -)+_(+_+)
Error: Function strands cannot contain more than two items
  at 3:9
3 | ⊃(+ + -)+_+_+
            ─────

# Experimental!
1 5 8 2
⊃(+ + -)+_(+_+)

16
14

# Experimental!
1 5 8 2
⊃(|4 + + -)+_(|3 +_+)

16
14

• Add experimental labels, denoted by a $ immediately followed by an identifier, which attach(es) a name to an array.

# Experimental!
$aa[1 5 8 2 1 5 8 2]
$aa

aa: [1 5 8 2 1 5 8 2]

• Add experimental shapes and types modifiers, which validate the shape and type of an array or arrays
• Deprecate pop ◌ formatting from ;
• Deprecate all ⋔
• Add an experimental repr function that produces a string representation of a value in a format that can be read by the interpreter