*******
Changes
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2.6.0 (2026-04-05)
==================

- Add support for partitioning graphs with node and edge weights.

- Add function to convert circle sky regions to polygons.

- Add function to calculate approximate orientation of UVEX for a ground pass.

2.5.0 (2026-03-20)
==================

- Add support for pointlike FOVs and FOVs that are nonconvex polygons.

- The function ``m4opt.fov.footprint_healpix`` now has a default value for the
  ``target_coord`` argument.

2.4.0 (2026-03-06)
==================

- Add exposure time models for Vera C. Rubin Observatory and Zwicky Transient
  Facility.

- Update installation instructions for users of academic editions of CPLEX.

- Drop support for Python 3.12.

2.3.1 (2026-01-23)
==================

- Fix an issue where MILP optimization could terminate early before CPLEX had
  found a best bound. This was prone to happen after MIP restarts.

2.3.0 (2026-01-22)
==================

- When available memory is limited by the ``--memory`` option, spool CPLEX's
  node file to disk.

- If the solution is aborted because the best bound falls below the objective
  lower cutoff, then record the solution status as
  `aborted, lower cutoff reached`.

2.2.1 (2026-01-16)
==================

- Fix crash for sky maps with invalid pixels when using a fixed absolute
  magnitude.

2.2.0 (2026-01-15)
==================

- Add support to the scheduler for pointwise distance distributions but fixed
  absolute magnitude.

2.1.0 (2025-12-31)
==================

- Add the method ``m4opt.milp.Model.to_stream``.

- Add the method ``m4opt.utils.optimization.partition_graph_color``.

2.0.1 (2025-06-12)
==================

- Allow passing any options to METIS.

2.0.0 (2025-06-09)
==================

- Allow each mission to have one or several different sky grids.

- Add support for combining constraints using boolean operators
  (``lhs | rhs``, ``lhs & rhs``, ``~op``).

- The ``Mission.constraints`` property no longer accepts a list of constraints.
  To combine multiple constraints, use boolean operators.

- The ``Mission.detector`` property is now optional. Only adaptive exposure
  time observing strategies require it to be defined.

- Add Earth radiation belt constraint.

- Add two new missions: Vera C. Rubin Observatory and Zwicky Transient
  Facility.

- Add a mixed integer programming Traveling Salesman solver.

1.0.0 (2025-04-07)
==================

- Add citation file.

- Refactor obsever position classes to support both Earth-fixed and
  Earth-orbiting observers.

- Add basic positional astronomy constraints on right ascension, declination,
  altitutide, azimuth, and airmass.

- Add at-night constraint for Earth-fixed observers.

- Add logical constraints (and, or, not).

- Add an exact Traveling Salesman solver as a utility function.

- Move the DustExtinction class to the m4opt.synphot.extinction module
  to prepare for adding other sources of extinction (e.g., atmospheric).

- Add optional zoom inset to animation.

0.1.1 (2025-02-24)
==================

- Update PyPI long description. No functional changes in this release.

0.1.0 (2025-02-24)
==================

- First release.