meta/prophet v1.1.2 on GitHub

What's Changed

Sped up .predict() by up to 10x by removing intermediate DataFrame creations. Credits to @orenmatar (#2299)
Sped up fourier series generation, leading to at least 1.5x speed improvement for train() and predict() pipelines. Credits to @yoziru (#2334)
Fixed bug in how warm start values were being read. Documentation has been updated.
Developer experience: modernized build / develop / test workflow based on https://discuss.python.org/t/custom-build-steps-moving-bokeh-off-setup-py/16128/17
Wheels are now version-agnostic. This is possible because we don't use any Python-version-specific tooling to compile stan models. Credits to @WardBrian for the suggestion and this example: https://github.com/joerick/python-ctypes-package-sample.

Fixed a bug in construct_holiday_dataframe()
Updated holidays data based on holidays version 0.18.
Note that the 1.1.2 has been submitted to CRAN but is not live yet. You can install by downloading the attached files: .tar.gz to install from source, or .tgz for the macOS binary.