RealFuels v13.6.0 for KSP 1.8+
- Support a subconfig system for Engine Configs, to support e.g. the retracted and extended states of the XLR129-P-1.
- Many performance improvements.
- Support filtering available configs based on external input (e.g. realism level).
- Support (and require) SolverEngines v3.13+.
- Better ECM integration with RP-1.