Add ability to fetch a single share

[santib]

@hexgnu Hi, I think that having access to this endpoint is quite important, for example to make 1 API call to get the likes and comments instead of calling the other 2 methods separately (share_likes and share_comments).

[hexgnu]

I'll cut a version and ship it sometime today

Thanks!

[santib]

Awesome! Thanks :)

[grzuy]

Hi @hexgnu

Sorry to bother, but any update on releasing this new addition?

Thanks in advance! :-)

[hexgnu]

Pushed a new version just now

Thanks!

[grzuy]

Thanks a lot!!