Enhancements

• Add random access operator and -= operator to RealTuple
• Make the Assembler a template parameter in the RiemannianTRSolver and the RiemannianPNSolver
• Use the rank as the ADOL-C tape number (mixedlocalgfeadolcstiffness)
• Wrap energy calculation and solve-call in the Mixed-Riemannian-TR solver in a try-catch statement
• Close the ADOL-C tape even if the energy calculation throws an error in mixedlocalgfeadolcstiffness

changed title from Enhancements in to Enhancements

changed the description

@osander: as requested: the first six commits in a separate MR

Thanks! Please fix the CI system failures...

added 2 commits

• a9104ef4 - Make the Assembler a template parameter in the RiemannianTRSolver and the RiemannianPNSolver
• 70208025 - Add random access operator and -= operator to RealTuple

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@osander ci passed now

merged

mentioned in commit e58c5599