Add lock around init func and prepare release

[aseyboldt]

Fixes #169

[lucianopaz]

The code changes look good. I don't know why github actions are ignoring the hash comment and interpreting # 3.13 as a version number, but given that's the case, you should remove those lines from the ci.yml

[lucianopaz]

Looks like you have to delete the line instead of trying to comment it out. The gha seem to read # 3.13 as a version tag in itself

[lucianopaz]

Also delete this

[lucianopaz]

Delete this

[aseyboldt]

I think this is ready for another review.
If you could also check that this actually solves the example of the sporadically failing sampling run, that'd be great. :-)

[lucianopaz]

LGTM