Adding fast_rnnt

[pkufool]

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[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipes/fast_rnnt) and found it was in an excellent condition.

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I wanted to let you know that I linted all conda-recipes in your PR (recipes/fast_rnnt) and found some lint.

Here's what I've got...

For recipes/fast_rnnt:

• Selectors are suggested to take a <two spaces>#<one space>[<expression>] form. See lines [18]

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipes/fast_rnnt) and found it was in an excellent condition.

[pkufool]

ready for review.

[pkufool]

@conda-forge-admin, please ping team

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-webservice.

I was asked to ping @conda-forge/staged-recipes and so here I am doing that.

[pkufool]

@conda-forge-admin , please ping team

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-webservice.

I was asked to ping @conda-forge/staged-recipes and so here I am doing that.

[pkufool]

@conda-forge-admin , please ping team

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-webservice.

I was asked to ping @conda-forge/staged-recipes and so here I am doing that.

[xhochy]

Why build for so many pytorch versions?

[pkufool]

It uses pytorch cpp api, I am not sure whether it works if using different versions for building and running. Will try it locally.

[xhochy]

No, it won't but we usually build only for the latest (and sometimes second to last) version of pytorch.

[carterbox]

Please choose up to two pytorch versions to build against.