---
fixes:
  - |
    The ``latex_engine`` and ``latex_elements`` options, which were previously
    always overridden by the extension, will now be merged with user
    configuration. If ``latex_engine`` is configured by the user, this will be
    used in-place of the default. If ``latex_elements``, a dictionary, is
    configured, the values provided by the user will be merged with the
    defaults with user-provided defaults preferred.