Add function log_indices that returns number of currently active indices

[WurmPeter]

Solving #180

One of my very first pull requests. Please feel free to tell me anything I could do better.

[daroczig]

Thanks a ton 🙌

I've left a few minor comments -- would you mind reviewing those, and also run roxygen to generate the Rd files? No worries if that's too much, I can also do that, just let me know.

[WurmPeter]

I have made a new commit. Please review again :)

[daroczig]

Thank you! Could you please double check on #194 (comment)? I don't think any colons are needed at all.

[WurmPeter]

Sorry to cause so many problems... Should I commit the changed NAMESPACE file?

[daroczig]

no worries 🙌
yes, pls. would be also nice to update the pkgdown.yaml file as per the related error msg (mention among the other related fans)

[daroczig]

thank you very much 🙇

[WurmPeter]

Great, thanks for your patience.