Modification for adapting newer C++17 and Pytorch 2.0+

[WayenVan]

For anyone who are struggling with installing this repo, I've forked and made some changes, which could successfully installed in Pytorch2.0+ with C++17.

Please check here
https://github.com/WayenVan/ctcdecode

[Basicname]

That works for pytorch 2.3.0. Thank you so much!!!!

[hm-ca]

ty so much. a big time saver!