0.6.3

Added

• Added a package manager: futhark-pkg. See also the
  documentation.

• Added log2 and log10 functions to f32 and f64.

• Module type refinement (with) now permits refining parametric
  types.

• Better error message when invalid values are passed to generated
  Python entry points.

• futhark-doc now ignores files whose doc comment is the word
  "ignore".

• copy now works on values of any type, not just arrays.

• Better type inference for array indexing.

Fixed

• Floating-point numbers are now correctly rounded to nearest even
  integer, even in exotic cases (#377).

• Fixed a nasty bug in the type checking of calls to consuming
  functions (#596).