## OrdinaryDiffEq v5.42.0 [Diff since v5.41.0](https://github.com/SciML/OrdinaryDiffEq.jl/compare/v5.41.0...v5.42.0) **Closed issues:** - Removed specialized tuple input handling -> ArrayPartition (#504) **Merged pull requests:** - New KenCarp4 (#1177) (@utkarsh530) - skip computations if functionmap is EvalFunc(identity) (#1180) (@ChrisRackauckas) - add citation docstrings (#1181) (@ChrisRackauckas) - test second order ODEs with first order solvers (#1182) (@ChrisRackauckas) - Added MagnusGL6 (#1183) (@Biswajitghosh98) - Added MagnusNC6 (#1184) (@Biswajitghosh98) - Added MagnusGL8 (#1186) (@Biswajitghosh98) - New KenCarp5 (#1187) (@utkarsh530) - Added MagnusNC8 (#1188) (@Biswajitghosh98) - KenCarp47 & KenCarp58 Tests (#1189) (@utkarsh530) - Added MagnusGL4 (#1190) (@Biswajitghosh98) - Split methods test timeout fix in Travis (#1192) (@utkarsh530) - Add sequences for ImplicitEulerExtrapolation (#1199) (@utkarsh530) - DEstats update in Extrapolation Methods & fixes (#1200) (@utkarsh530) - Remake for Algorithms (#1201) (@kanav99) - Sequence factor option in explicit-extrapolation midpoint methods (#1202) (@utkarsh530) - Updating recalculating Jacobian in internal discretisation (#1203) (@utkarsh530) - Do not degrade compile time information to runtime information (#1204) (@YingboMa) - MagnusAdapt4[WIP] (#1205) (@Biswajitghosh98) - Use OrdinaryDiffEq's nlsolver if possible in ShampineCollocationInit (#1206) (@YingboMa) - add missing DPRKN6 cache print (#1207) (@ChrisRackauckas) - Update T calculation in adaptive step-sizing of Implicit Extrapolation Methods (#1208) (@utkarsh530) - Update Work Calculation in Implicit Extrapolation Methods (#1209) (@utkarsh530) - Fix overflow in Implicit Extrapolation methods (#1211) (@utkarsh530) - Add Gragg's smoothing to Implicit Hairer Wanner Extrapolation (#1212) (@utkarsh530) - [WIP] Multi-threading in Implicit Extrapolation Methods (#1213) (@utkarsh530) - Multi-threading for Implicit Extrapolation Methods (#1215) (@utkarsh530)