New features:

• Histogram support (Thanks @neilschelly!)
• Reload metrics when file definition have changed (Thanks @vsile!)
• Provide severals file to handle custom metrics

Optimizations:

• Asynchronous request to database (Thanks @vsile!)

Misc:

• New metrics example (Thanks @daviddetorres)
• Update of dependencies for fix segfault problems
• Documentation enhancements

And a ton of other cool things.

Thanks to @neilschelly, @vsile, @daviddetorres, @pard68 and all the others.