v2.0.0

Breaking changes

• Use size_t for indices in arrays and slices
• coarray::data now returns a T* instead of void*
• The iterator overload for coarray::put now requires an explicit offset
• Index type for D = 1 now wraps an int, instead of a singleton array

Added

• Add foldl and foldl_each for coarrays.
• Add aliases for common folds: sum, product, min, and max, for values, variables and coarrays. Example: bulk::max(world, s + 1) == p.
• Add bulk::span for coarrays, allowing contiguous sequences as slice data
  sources in addition to std::vector.
• Add coarray::data to access the underlying (sequential) storage of coarrays.
• Allow externally managed data buffers for coarray.
• Add support for splitting a world into multiple parts, allowing subset syncs and communication. See also bulk::world::split.
• Add get_change to timer class (@SdeBerg, #10)

Changed

• Use size_t for indices in arrays and slices
• coarray::data now returns a T* instead of void*
• The iterator overload for coarray::put now requires an explicit offset
• Index type for D = 1 now wraps an int, instead of a singleton array

Fixed

• Fixed 'element owner' and 'local <-> global' computations for block
  partitionings with sizes that are not perfect divisors
• Fixed virtual qualifications on a number of internal functions