## OrdinaryDiffEq v5.61.1

[Diff since v5.61.0](https://github.com/SciML/OrdinaryDiffEq.jl/compare/v5.61.0...v5.61.1)



**Merged pull requests:**
- ftts with a few implicit methods (#1467) (@ChrisRackauckas)
- make the life of inference easier (#1468) (@ChrisRackauckas)

## OrdinaryDiffEq v5.61.0

[Diff since v5.60.2](https://github.com/SciML/OrdinaryDiffEq.jl/compare/v5.60.2...v5.61.0)


**Closed issues:**
- How to diagnose inference and precompilation issues (#1461)

**Merged pull requests:**
- Improve precompilation (#1460) (@ChrisRackauckas)
- Reduce the first time to solve from 5 seconds to 1 second for Tsit5 (#1465) (@ChrisRackauckas)
- CompatHelper: add new compat entry for "LoopVectorization" at version "0.12" (#1466) (@github-actions[bot])

## OrdinaryDiffEq v5.60.2

[Diff since v5.60.1](https://github.com/SciML/OrdinaryDiffEq.jl/compare/v5.60.1...v5.60.2)


**Closed issues:**
- Autodiff broken with upgraded packages (#1457)

**Merged pull requests:**
- Implementation of paper "Solving 0 = F (t; y(t); y0(t)) in Matlab" (#1452) (@JunpengGao233)
- Fix algevent tests and multi-dimensional input bugs in FBDF (#1453) (@JunpengGao233)
- Remove scope warnings from unit tests. (#1455) (@NAThompson)
- use ForwardDiff chunksize heuristic (#1459) (@ChrisRackauckas)

## OrdinaryDiffEq v5.60.1

[Diff since v5.60.0](https://github.com/SciML/OrdinaryDiffEq.jl/compare/v5.60.0...v5.60.1)


**Closed issues:**
- Exponential RK + Krylov + large, complex ODE system = segfault (#1447)
- Is there RKF algorithm implementation? (#1449)

**Merged pull requests:**
- Fix calck default and add a test for DP5 only saveat interpolation (#1450) (@ChrisRackauckas)
- Update Project.toml (#1451) (@ChrisRackauckas)

## OrdinaryDiffEq v5.60.0

[Diff since v5.59.4](https://github.com/SciML/OrdinaryDiffEq.jl/compare/v5.59.4...v5.60.0)


**Closed issues:**
- Iterate of return node? (#1441)
- Change signature of stage limiters (#1444)

**Merged pull requests:**
- update signature of stage/step limiters (#1445) (@ranocha)

## OrdinaryDiffEq v5.59.4

[Diff since v5.59.3](https://github.com/SciML/OrdinaryDiffEq.jl/compare/v5.59.3...v5.59.4)



**Merged pull requests:**
- avoid reshapedarray when scalar indexing is fast (#1442) (@ChrisRackauckas)

## OrdinaryDiffEq v5.59.3

[Diff since v5.59.2](https://github.com/SciML/OrdinaryDiffEq.jl/compare/v5.59.2...v5.59.3)


**Closed issues:**
- OrdinaryDiffEq performance degredation (#1385)
- QNDF Event Handling (#1434)

**Merged pull requests:**
- Add event handling tests for QNDF (#1438) (@JunpengGao233)
- Allow resizing with lazy WOperator (#1440) (@ChrisRackauckas)

## OrdinaryDiffEq v5.59.2

[Diff since v5.59.1](https://github.com/SciML/OrdinaryDiffEq.jl/compare/v5.59.1...v5.59.2)


**Closed issues:**
- Small allocation in in-place QNDF method (#609)
- A Discussion of BDF Methods (#755)
- Generic algorithm names (#1172)

**Merged pull requests:**
- Fix some alg_extrapolates assumptions and resizing cache invalidation (#1435) (@ChrisRackauckas)

## OrdinaryDiffEq v5.59.1

[Diff since v5.59.0](https://github.com/SciML/OrdinaryDiffEq.jl/compare/v5.59.0...v5.59.1)



**Merged pull requests:**
- fix specializations on interpolations (#1431) (@ChrisRackauckas)

## OrdinaryDiffEq v5.59.0

[Diff since v5.58.0](https://github.com/SciML/OrdinaryDiffEq.jl/compare/v5.58.0...v5.59.0)



**Merged pull requests:**
- remove function passing in perform_step! (#1429) (@ChrisRackauckas)

## OrdinaryDiffEq v5.58.0

[Diff since v5.57.0](https://github.com/SciML/OrdinaryDiffEq.jl/compare/v5.57.0...v5.58.0)



**Merged pull requests:**
- Allow non-vector DAEs (#1428) (@ChrisRackauckas)

## OrdinaryDiffEq v5.57.0

[Diff since v5.56.0](https://github.com/SciML/OrdinaryDiffEq.jl/compare/v5.56.0...v5.57.0)



**Merged pull requests:**
- Fix discrete reverse mode for some standard controllers (#1424) (@Vaibhavdixit02)
- Doc strings for solvers  (#1426) (@AnasAbdelR)
- updating docstrings for 2N explicit RK methods (#1427) (@jlchan)

## OrdinaryDiffEq v5.56.0

[Diff since v5.55.1](https://github.com/SciML/OrdinaryDiffEq.jl/compare/v5.55.1...v5.56.0)



**Merged pull requests:**
- Optimize QNDF take 1 (#1420) (@YingboMa)
- Add polyester threading option (#1421) (@chriselrod)

## OrdinaryDiffEq v5.55.1

[Diff since v5.55.0](https://github.com/SciML/OrdinaryDiffEq.jl/compare/v5.55.0...v5.55.1)



**Merged pull requests:**
- Update downstream testing setup (#1418) (@ChrisRackauckas)
- More robust controller typing (#1419) (@ChrisRackauckas)

## OrdinaryDiffEq v5.55.0

[Diff since v5.54.0](https://github.com/SciML/OrdinaryDiffEq.jl/compare/v5.54.0...v5.55.0)


**Closed issues:**
- Weird error: end not defined for VCABM algorithm (#1410)
- Low-storage RK solvers test failure (#1412)
- Tracker downstream test is broken (#1414)

**Merged pull requests:**
- Fix QNDF (#1411) (@JunpengGao233)
- Mark broken tests broken (#1413) (@YingboMa)
- fix low storage RK tests (#1415) (@ranocha)
- Do not remove tracking information from time (#1417) (@ChrisRackauckas)

## OrdinaryDiffEq v5.54.0

[Diff since v5.53.2](https://github.com/SciML/OrdinaryDiffEq.jl/compare/v5.53.2...v5.54.0)


**Closed issues:**
- PID step size controllers (and maybe even more?) (#1379)
- Optimized adaptive methods for compressible fluid dynamics (#1380)

**Merged pull requests:**
- controllers (#1384) (@ranocha)
- fastbroadcast dprkn6 (#1405) (@ChrisRackauckas)

## OrdinaryDiffEq v5.53.2

[Diff since v5.53.1](https://github.com/SciML/OrdinaryDiffEq.jl/compare/v5.53.1...v5.53.2)



**Merged pull requests:**
- Simplify ROCK methods for FastBroadcast.jl (#1403) (@ChrisRackauckas)

## OrdinaryDiffEq v5.53.1

[Diff since v5.53.0](https://github.com/SciML/OrdinaryDiffEq.jl/compare/v5.53.0...v5.53.1)


**Closed issues:**
- Error combining BigFloats with callbacks (#1400)

**Merged pull requests:**
- Bump the epsilon used for the tstops checking (#1401) (@ChrisRackauckas)

## OrdinaryDiffEq v5.53.0

[Diff since v5.52.7](https://github.com/SciML/OrdinaryDiffEq.jl/compare/v5.52.7...v5.53.0)


**Closed issues:**
- ContinuousCallabacks is affected by SavingCallback (#1191)

**Merged pull requests:**
- Remove stiffness detection loop (#1398) (@ChrisRackauckas)

## OrdinaryDiffEq v5.52.7

[Diff since v5.52.6](https://github.com/SciML/OrdinaryDiffEq.jl/compare/v5.52.6...v5.52.7)


**Closed issues:**
- BigFloat and dualcache (#1393)
- Timing goes up for reiniting and resolving an integrator (#1394)
- BigFloat not working with jac_prototype of type SparseMatrixCSC (#1395)

**Merged pull requests:**
- Reinit saveiter_dense too (#1396) (@tomaklutfu)