See commit log on github, https://github.com/equinor/fmu-ensemble/commits/
First open release (GPLv3) in June 2019.
The fmu.ensemble Python module development was started in August 2018, as an Equinor internal code project, building prior internal work from at leastL:
- Smørbukk Sør webportal
- Post-processing library made for webportal (2017/2018) https://github.com/Statoil/fmu_postprocessing
- PyPostFMU https://git.equinor.com/FDIL/pypostfmu