For now only strings are accepted as the measures parameter in GridSearchCV, RandomizedSearchCV, and cross_validate. It's thus impossible to use those with measures that take specific parameters as input (e.g. #156 ), or to use custom measures.

We should then accept callables in addition to strings.

Each callable should only take the predictions parameter. In order to handle measur

The information is vended by the appropriate types, however, the typography and color information is more about the interface style and should be extracted from the classes themselves. More importantly, this is needed to sink the typography information into FontDescriptor.

To make NLP (Natural Language Processing) better, we need to update the corpus time to time with new additions of data.

In most cases, our pointers should never be null. By converting std::{shared,unique}_ptr types to nn_{shared,unique}_ptr
(nn library), the C++ type checker can statically verify that pointers are non-null.