Add noexcept declarations for Cython 3.0
#680
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This fixes a large performance regression with many of the CPU models. For instance when training the ml100k dataset, when compiled with Cython 3.0.0: * Without this change ``` DEBUG:implicit:trained model 'bpr' in 69.49404716491699 DEBUG:implicit:trained model 'lmf' in 42.24160981178284 DEBUG:implicit:trained model 'als' in 120.11413407325745 ``` * With this change ``` DEBUG:implicit:trained model 'bpr' in 0.18895816802978516 DEBUG:implicit:trained model 'lmf' in 0.06523633003234863 DEBUG:implicit:trained model 'als' in 1.8809657096862793 ``` Fixes #678
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This fixes a large performance regression with many of the CPU models.
For instance when training the ml100k dataset, when compiled with Cython 3.0.0:
Fixes #678