What's Changed
* Improved documentation, contribution instructions and .gitignore in https://github.com/Nixtla/hierarchicalforecast/pull/57
* Intro paragraph for documentation, tutorial titles, gitignore protect… in https://github.com/Nixtla/hierarchicalforecast/pull/60
* Fixed missing documentation plots, working README example in https://github.com/Nixtla/hierarchicalforecast/pull/61
* [FIX] Plot single-valued time series in https://github.com/Nixtla/hierarchicalforecast/pull/64
* [FIX] h=1 evaluation in https://github.com/Nixtla/hierarchicalforecast/pull/63
* [FIX] Make Y_df optional for the reconcile method in https://github.com/Nixtla/hierarchicalforecast/pull/65
**Full Changelog**: https://github.com/Nixtla/hierarchicalforecast/compare/v0.1.0...v0.1.1