2.0
This release supports Ruby 2.0 up to 2.7.
It includes part of the improvements done for the HTN IPC 2020.
The most significant difference is the new state representation used both during compilation and planning, which makes common operations simpler and faster.
It is not compatible with previously compiled planning instances due to this difference.
All components, including tests and documentation, were updated to match the new state representation.
The Macro extension was redesigned to avoid invisible operator duplicates.
The Wise extension can verify initial state duplicates.