* Includes new safety features, settings, bug fixes, and documentation
* Estimate now warns user if empirical input/labels are out-of-distribution
* Estimate/Format no longer require labels file for empirical analyses unless param_data used
* Plot improved to make it easier to notice out-of-distribution empirical input/labels
* Plot now makes PCA of encoded trees to help with out-of-distribution detection
* Replace mean APE scores for training diagnostics with median APE scores
* Support to choose optimizer: adam, adamw, adagrad, adadelta, rmsprop, sgd
* Support to choose activation functions: relu, elu, leaky_relu, tanh, sigmoid
* Support to set learning rate
* Fix issue where Format reported divide-by-zero warning for summ. stat. with perfectly balanced trees
* Fix issue where large serial trees were not correctly converted to downsampled extant-only trees
* Add settings/warnings to prevent nearly-zero-aged tips in extant-only from being treated as extinct
* Add torchvision to dependency list
* Replace deprecated PdfMerger with PdfWriter
* Support to use 2+ GPUs
* Reorganize documentation
* Documentation now has Overview -> Safe Usage section
* Documentation tutorial now contains better explanations of figures