* Add multiprocessing Pool and create function for single cutoff forecast
* add params to single forecast function
* Add iterable for input params for pool
* Add docstring for single cutoff forecast func
* Add check for multiprocessing in test_cross_validation
* check ofr is None and is True and add better description for multiprocess in docstring
* Raise error if wrong args chosen and add test
* fix conflicts
* Change arg to True/False, model.kwargs
* docstring units and few more fixes
* change to iterator and add back tqdm to for loop
* add option in diagnosics notebook about multiprocessing option
* add extra test for checking calls to single forecast func
* changes
* added actual tests for fit method
* precision
* syntax
* sampling not working
* sampling seems to work
* sampling not working again
* sampling works, tests to be removed
* replaced data with rmse
* replace pystan with cmdstanpy
* cleanup
* cleanup
* test for newton
* added support for multiple backends
* minor fixes
* fixed comment
* added support for --test-slow flag
* fixed import
* reverted style change
* specify backend based on env variable
* fixes
* PR fixes
* Added feature to mask seasonality
* Added conditional seasonality tests and fixed plotting it
* Fixed diagnostics for conditional seasonality and cleaned up code
* Allow both both hoidays and append holidays
Match holidays in predict and fit
Add test for append_holiday features; minor fixes
Add column name validation for append_holidays names; allow only one country
Fix bug about holiday year different from input year and also other bugs
Change function description
Add append holiday feature for R
* Add test for R/Pyrhon; fix bugs
* Allow both both hoidays and append holidays; match holidays in predict and fit
* Allow both both hoidays and append holidays; match holidays in predict and fit
* Add test for append_holiday features; minor fixes
* Add column name validation for append_holidays names; allow only one country
* Update memory requirement description per #326
* Fix R warning with extra regressor; disallow constant extra regressors.
* Fix unit test broken in new pandas
* Fix diagnostics unit tests for new pandas
* Fix copy with extra seasonalities / regressors Py
* Fix copy with extra seasonalities / regressors R
* Fix weekly_start and yearly_start in R plot_components
* Fix plotting in pandas 0.21 by using pydatetime instead of numpy
* Version bump
* Update README for new version
* Fix missing columns in SHF with extra regressor
* Update memory requirement description per #326
* Fix R warning with extra regressor; disallow constant extra regressors.
* Fix unit test broken in new pandas
* Fix diagnostics unit tests for new pandas
* Fix copy with extra seasonalities / regressors Py
* Fix copy with extra seasonalities / regressors R
* Fix weekly_start and yearly_start in R plot_components
* Fix plotting in pandas 0.21 by using pydatetime instead of numpy
