v0.12.0

• Update RavenPy to 0.4.2
• Migrate utilities to RavenPy
• Add notebook for advanced forecasting
• Add notebook for probabilistic flood assessment
• Option to skip slow tests
• Add climpred verification WPS service
• Pre-commit hooks
• Install from conda Raven and Ostrich libraries
• Support passing HRUs
• Use scale/offset instead of linear_transform
• Enable GitHub CI
• Fix broken notebooks
• Improve error reporting by including stack trace in error messages.