Generator are not showing on doc.rs

[Tudyx]

I open this issue to signal that the whole generator module is not visible in doc.rs. It took me a while to figure out that this library can also do calendar generation besides of parsing, so I think it could be useful to show it on the docs.

[Peltoche]

Thanks for the report @Tudyx , I will take a look

[IgnisDa]

Hey @Peltoche, any updates on this? Thanks!