New version: JutulDarcy v0.2.21

[JuliaRegistrator]

• Registering package: JutulDarcy
• Repository: https://github.com/sintefmath/JutulDarcy.jl
• Created by: @moyner
• Version: v0.2.21
• Commit: e20031ff9455a433fb3cc70916f54d0224c90e7d
• Reviewed by: @moyner
• Reference: sintefmath/JutulDarcy.jl@e20031f#commitcomment-140907144
• Description: Darcy flow and reservoir simulator based on Jutul.jl
• Release notes:

## Changes

- Documentation improvements
- Add support for stability bypass and flash reuse in compositional solvers (pass `fast_flash=true` to `setup_reservoir_model` to enable)
- Support for parsed volume shift in solvers
- Much faster CPR setup for many components (no longer hard coded limit of up to 6 components for fastest version)
- Improved compositional equilibriation support
- Well solver now is only active for first iteration when enabled by default

[github-actions]

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