Set binding=true compiler flag for optimizers
Set binding=true compiler flag for optimizers

Allows inspecting signature and makes functions behave more like Python functions and less like builtins. See https://cython.readthedocs.io/en/latest/src/userguide/source_files_and_compilation.html#compiler-directives

spacy-io/thinc,spacy-io/thinc,explosion/thinc,spacy-io/thinc,explosion/thinc,explosion/thinc,explosion/thinc