0.2.0

Added

• Run-time errors due to failed assertions now include a stack
  trace.

• Generated OpenCL code now picks more sensible group size and count
  when running on a CPU.

• scatter expressions nested in maps may now be parallelised
  ("segmented scatter").

• Add num_bits/get_bit/set_bit functions to numeric module
  types, including a new float module type.

• Size annotations may now refer to preceding parameters, e.g:

  let f (n: i32) (xs: [n]i32) = ...
  

• futhark-doc: retain parameter names in generated docs.

• futhark-doc: now takes -v/--verbose options.

• futhark-doc: now generates valid HTML.

• futhark-doc: now permits files to contain a leading documentation
  comment.

• futhark-py/futhark-pyopencl: Better dynamic type checking in
  entry points.

• Primitive functions (sqrt etc) can now be constant-folded.

• Futlib: /futlib/vec2 added.

Removed

• The built-in shape function has been removed. Use length or
  size parameters.

Changed

• The from_i32/from_i64 functions of the numeric module type
  have been replaced with functions named i32/i64. Similarly
  functions have been added for all the other primitive types
  (factored into a new from_prim module type).

• The overloaded type conversion functions (i32, f32, bool,
  etc) have been removed. Four functions have been introduced for
  the special cases of converting between f32/f64 and i32:
  r32, r64, t32, t64.

• Modules and variables now inhabit the same name space. As a
  consequence, we now use x.y to access field y of record x.

• Record expression syntax has been simplified. Record
  concatenation and update is no longer directly supported.
  However, fields can now be implicitly defined: {x,y} now creates
  a record with field x and y, with values taken from the
  variables x and y in scope.

Fixed

• The != operator now works properly on arrays (#426).

• Allocations were sometimes hoisted incorrectly (#419).

• f32.e is no longer pi.

• Various other fixes.

0.1.0

(This is just a list of highlights of what was included in the first
release.)

• Code generators: Python and C, both with OpenCL.

• Higher-order ML-style module system.

• In-place updates.

• Tooling: futhark-test, futhark-bench, futhark-dataset, futhark-doc.

• Beginnings of a basis library, "futlib".