[src] Make sample rate positional

[mpariente]

As discussed in #427, we'll remove default sample rate argument.

We start with a deprecation warning when it is not passed, and will remove it in a later release.

[jonashaag]

Positional and having a default are orthogonal concepts. I think the wording should be: “will be required argument in the future.”

Also, is it safe to remove the backwards compat SR table lookups now? (I am not up to date on that front)

[mpariente]

Positional and having a default are orthogonal concepts. I think the wording should be: “will be required argument in the future.”

Thanks.
I was thinking about the wording and I was sure I messed it up 😉

Also, is it safe to remove the backwards compat SR table lookups now? (I am not up to date on that front)

No, the only model that has 16k FS is DeMask, which is not on HF's hub yet (@popcornell ? ^^)