v21.14.0

Take reduce's accumulator with the element spread out (#229)

Enhancements:

• Both forms of reduce take an accumulator with one parameter per
  tuple element, pairs |> reduce(0, (total, a, b) => total + a * b)

Technical:

• Built with ghul.compiler 62.6.0, the first to accept an argument pack
  after a formal's own parameters

Co-authored-by: ghul-coder[bot] <286450068+ghul-coder[bot]@users.noreply.github.com>
Co-authored-by: Claude Fable 5.1 noreply@anthropic.com

v21.13.0

Add sum and product to Ghul.Pipes (#228)

Enhancements:

• sum and product total a sequence with no seed argument, over int,
  long, double, decimal and bigint
• The total of an empty source is zero or one rather than an absent
  value, so it needs no unwrapping

Co-authored-by: ghul-coder[bot] <286450068+ghul-coder[bot]@users.noreply.github.com>
Co-authored-by: Claude Opus 5 noreply@anthropic.com

v21.12.1

Read a pipe through the non-generic IEnumerable and IEnumerator (#227)

Bugs fixed:

• A consumer in another language reading a pipe through the non-generic
  IEnumerable or IEnumerator got null back, on every pipe class

Technical:

• Cover a pipe declaring the trait, one inheriting it from a base, a
  reference element and a value element read through the non-generic
  Current

Co-authored-by: ghul-coder[bot] <286450068+ghul-coder[bot]@users.noreply.github.com>
Co-authored-by: Claude Opus 5 noreply@anthropic.com

v21.12.0

Take the remainder of any integer, and divide an unsigned one as unsigned (#226)

Enhancements:

• Declare % for byte, ubyte, short, ushort, char, uint, ulong, word and
  uword, which had none

Bugs fixed:

• Divide and take the remainder of an unsigned integer as unsigned, so a
  value above the signed maximum answers correctly (closes #2874, closes
  #2863)

Technical:

• Build with ghul.compiler 62.0.2, which lowers the unsigned intrinsics

Co-authored-by: ghul-coder[bot] <286450068+ghul-coder[bot]@users.noreply.github.com>
Co-authored-by: Claude Opus 5 noreply@anthropic.com

v21.11.0

Add display and update_display to the runtime (#225)

Enhancements:

• display(value) shows a value while code runs: through the sink a
  host installed, or with no host as a line of inspect text
• display(value, id) and update_display(value, id) show a value
  under an id and replace it where the host can redraw
• A host installs a DisplaySink, or two functions when its copy of the
  runtime is not the one the code it runs uses

Co-authored-by: ghul-coder[bot] <286450068+ghul-coder[bot]@users.noreply.github.com>
Co-authored-by: Claude Opus 5 noreply@anthropic.com

v21.10.0

Add Renderable, for a value a host can show as an image or other media (#224)

Enhancements:

• New Renderable trait: a type offers its value as MIME-typed content,
  such as a PNG, best first, for a host to show in place of the text
• The host chooses which MIME types it honours, and the text $ writes
  stays the fallback

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Co-authored-by: Claude Opus 5 noreply@anthropic.com

v21.9.1

Quote a string a Displayable renders, in the detailed mode (#223)

Bugs fixed:

• inspect quotes a string that a Displayable renders through
  state.render, as it does a string inside any other value

Co-authored-by: ghul-coder[bot] <286450068+ghul-coder[bot]@users.noreply.github.com>
Co-authored-by: Claude Opus 5 noreply@anthropic.com

v21.9.0

Add count with a predicate (#222)

Enhancements:

• count(predicate) counts the elements that satisfy a predicate: xs |>
  count(n => n % 2 == 0)

Technical:

• Raise VERSION to 21.9.0
• Bump the local ghul.compiler pin to 60.2.4

Co-authored-by: ghul-coder[bot] <286450068+ghul-coder[bot]@users.noreply.github.com>
Co-authored-by: Claude Opus 5 noreply@anthropic.com

v21.8.1

Render a type ghūl did not compile by its own to_string (#221)

Bugs fixed:

• $ and inspect no longer read the properties of a type from another
  language, which could block on a task's result; such a value renders by
  its own to_string

Co-authored-by: ghul-coder[bot] <286450068+ghul-coder[bot]@users.noreply.github.com>
Co-authored-by: Claude Opus 5 noreply@anthropic.com

v21.8.0

Add collect_map over key and value pairs (#220)

Enhancements:

• collect_map() with no selectors builds a MAP from a sequence of key
  and value pairs: [("a", 1), ("b", 2)] |> collect_map()

Technical:

• Raise VERSION to 21.8.0
• Bump the local ghul.compiler pin to 60.2.2

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Co-authored-by: ghul-coder[bot] <286450068+ghul-coder[bot]@users.noreply.github.com>
Co-authored-by: Claude Opus 5 noreply@anthropic.com