Release 0.7.0 · dwavesystems/dwave-optimization

Make C++ BufferIterator always shaped.
Implicit sum constraints added to NumberNode.
- Users may define a sum constraint over the entire array or along
  an single axis.
- Enabled at the Python level for BinaryVariable and
  IntegerVariable. See #216.
- Added NumberNode::sum_constraints() (returns sum constraint).
- Added NumberNode::sum_constraints_lhs() (returns
  state-dependent sums associated with sum constraint).
- Modified NumberNode::exchange() to accept optional slice
  arguments.
- Modified NumberNode::clip_and_set_value() to accept optional
  slice argument.
- Modified IntegerNode::set_value() to accept optional slice
  argument.
- Modified BinaryNode::flip() to accept optional slice argument.
BinaryNode optionally tracks indices with buffer value 1 and 0.
- Enabled when users define a sum constraint.
- Added BinaryNode::num_true() (return # of indices with buffer
  value 1 in slice given sum constraint).
- Added BinaryNode::num_false() (return # of indices with
  buffer value 0 in slice given sum constraint).
- Added BinaryNode::ith_true_index() (returns ith index with
  buffer value 1 in slice given sum constraint).
- Added BinaryNode::ith_false_index() (returns ith index with
  buffer value 0 in slice given sum constraint).
Add three methods to the model returned by the job-shop scheduling
model generator: model.get_global_task_ordering(),
model.get_start_times(), and model.get_end_times().

Drop support for contiguous C++ BufferIterator. This means that
one must always provide a shape and strides argument when
constructing the iterator.
Change Array::view to use std::default_sentinel. This means
Array::view is no longer a std::common_range.
Drop the Array::View type declaration.
Update job-shop scheduling generator to use a list variable for the
global ordering of all tasks from which the model constructs a
feasible schedule.

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