What's Changed
* closed-form solutions to Asian average strike and price options + tests, moving Black-Sscholes formulae from AF example to `utils.financial_formulae`, support for dividend yield in B-S formulae + test by pawelmagnu in https://github.com/open-atmos/PyMPDATA/pull/497
* fix docs landing site narrative to describe both animations by slayoo in https://github.com/open-atmos/PyMPDATA/pull/506
* support for 2D VectorFields in Extrapolated bc (previously was setting np.nan as a not-implemented indication) by slayoo in https://github.com/open-atmos/PyMPDATA/pull/505
**Full Changelog**: https://github.com/open-atmos/PyMPDATA/compare/v1.3.0...v1.3.1