freud 2.11.0 Released

[Tommy Waltmann]

Version 2.11.0 of freud is now released. Thank you to all who contributed code and reported issues. Please report issues and suggest feature enhancements via the freud GitHub issue tracker.

• conda-forge package: https://anaconda.org/conda-forge/freud
• PyPI package: https://pypi.org/project/freud-analysis/
• GitHub repository: https://github.com/glotzerlab/freud
  
• Documentation: https://freud.readthedocs.io/en/stable/
• Source tarball: https://glotzerlab.engin.umich.edu/Downloads/freud/

This release adds documentation improvements in a few modules, as well as the following changes:

### Added

* Support for 2D systems in freud.diffraction.StaticStructureFactorDebye.

* Compilation uses the C++17 standard.

### Fixed

* EnvironmentMotifMatch correctly handles NeighborLists with more neighbors per particle than the motif.