0.4.2

New Features

• Implement C++ BinaryOpNode::sizeinfo() overload.
• Add C++ ModulusNode and Python Modulus symbol. Modulus
  propagates the modulus of its two predecessors element-wise. Modulus
  symbols may be created with either the % operator or the mod()
  function in dwave.optimization.mathematical. See #156.

Bug Fixes

• Fix serializing models with binary operations over dynamic
  predecessors. Previously it was not possible to estimate the state
  size which caused serialization to fail.