PTB-PSt1/PyDynamic: v1.4.1

Fix Introduce new package model_estimation in preparation of deprecations (f1ce923071c39dd816ab3d1bed03c836bbbf92be) Fix a broader case of the previously fixed error in make_equidistant() (5f1687f11e1cfabc9dc66ceafe208477d5d420c3) Documentation Introduce hint about external tutorial repository into README.md (5c296b7eadda68056ff0bcf83d2c0ea3984627eb) Document in README optional dependency installation for Jupyter Notebooks (f19bb379dd0b0f5221a7641c6126981036300bc8) Introduce hint about external tutorial repository into README.md (c7feffbdbe653c16f09ada2568bafe3dcf867fbe