Implement Eigen-like expression templates for spatial algebra computations · stack-of-tasks/pinocchio@f878480

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Input 'save-always' has been deprecated with message: save-always does not work as intended and will be removed in a future release. A separate `actions/cache/restore` step should be used instead. See https://github.com/actions/cache/tree/main/save#always-save-cache for more details.