Bump version with extra_sympy_mappings fix

Fix extra_sympy_mappings check

Include check for extra_sympy_mappings not None

Force user to define extra_sympy_mappings at init

Clean up README

Merge pull request #156 from MilesCranmer/latex-table

Remove tabularx import

Bump SR version with file cp fix

Include necessary packages in latex_table()

Merge branch 'master' into latex-table

Merge pull request #177 from MilesCranmer/improved-model-selection

Clean up docstring

Add unit-test for all selection strategies

Fix model selection for loss=0

Merge branch 'improved-model-selection' of ssh://ssh.github.com:443/MilesCranmer/PySR into improved-model-selection

Improve docstring

Format code with black

Reduce precision of JAX tests

Change "best" model_selection to apply loss threshold

Merge pull request #176 from MilesCranmer/normal-csv-format

Bump version with new csv format

Update docs on expected csv file

Assume normal csv format in reads

Add notes about model loading to options page

Merge pull request #167 from MilesCranmer/loading

Add README example for from_file

Fix assertion on csv filenames

Add assertion for csv filename

Change model load to classmethod

Reduce precision of tests

Fix bug with inplace editing of equation_file_contents_

Use .pkl instead of .csv.pkl

Add additional test for loading from pickle file

Checkpoint model before and after fit

Additional logging messages during load

Allow both `bkup` and `csv` file

Don't check for `equation_file_` until after checkpoint_file set

Test both with and without `bkup` file

Fix filename concat in test

Improve error message for missing operator mappings

Add test for loading from pickle file

Add missing pickle import

Add pickle files to gitignore

Allow loading from pickle file

Automatically pickle file at initialization

Remove extra_sympy_mappings from pickle file

Allow pickling without equations_ stored

Correctly set path names

Call `refresh` in load function

`load` function to init model from saved equations