CTranslate2 2.13.0

New features

• Add converter for Marian and support the collection of OPUS-MT pretrained models
• Support models applying a layer normalization after the embedding layer (cf. option --layernorm-embedding in Fairseq)
• Support models using the Swish (a.k.a SiLU) activation function
• Support models using custom decoder start tokens, which can be passed in the target prefix

Fixes and improvements

• Remove unexpected call to a CUDA function in CPU execution when unloading models
• Add option groups in the translation client help output
• Use new thrust::cuda::par_nosync execution policy when calling Thrust functions
• Update Thrust to 1.16.0
• Update pybind11 to 2.9.1