What's Changed
Thanks to Shisohka, SMT gets a new application: _Proper Orthogonal Decomposition + Interpolation_
More information in the [documentation](https://smt.readthedocs.io/en/latest/_src_docs/applications/podi.html) and the dedicated [notebook](https://github.com/SMTorg/smt/blob/43ab7806ce45153611a568e00e3641f4a98e1a24/tutorial/SMT_PODI_tutorial.ipynb).
* Setup of the PODI application by Shisohka in https://github.com/SMTorg/smt/pull/547
* Documentation for PODI application by Shisohka in https://github.com/SMTorg/smt/pull/553
* Adding PODI application notebook by Shisohka in https://github.com/SMTorg/smt/pull/563
* Fix design space for list by Paul-Saves in https://github.com/SMTorg/smt/pull/551
* Fix MFK check when using heteroscedastic noise by relf in https://github.com/SMTorg/smt/pull/554
* Fix indentation error in squar_sin_exp kernel by Paul-Saves in https://github.com/SMTorg/smt/pull/558
* Fix notebook Engineering application composite materials test case by Paul-Saves in https://github.com/SMTorg/smt/pull/559
* Update hierarchical variable doc for continuous lower than relationships by Paul-Saves in https://github.com/SMTorg/smt/pull/552
* Update notebooks by NatOnera and Paul-Saves in https://github.com/SMTorg/smt/pull/556
* Bump pypa/cibuildwheel from 2.17.0 to 2.18.0 by dependabot in https://github.com/SMTorg/smt/pull/557
New Contributors
* Shisohka made their first contribution in https://github.com/SMTorg/smt/pull/547
**Full Changelog**: https://github.com/SMTorg/smt/compare/v2.5.1...v2.6.0