Release notes from DifferentialEquations.jl

## DifferentialEquations v6.16.0

2020-12-26T01:20:38Z

Diff since v6.15.0

Closed issues:

Automated PDE solving fit for DifferentialEquations.jl (SciML#469)
Add new option to DAE solvers to never initialize DAE (SciML#549)
type unstable when returning EnsembleSolution object (SciML#603)
Sundials FunJac - MethodError (SciML#631)
DPRKN6 doesn't appear to use its free 6th order interpolant (SciML#633)
Need help in Second order Differential equation (SciML#634)
Installation fails on Win10 & julia 1.4.2 (SciML#635)
Question about setting a "shutdown" condition (SciML#638)
[feature request] DEStats results for the adjoint process when calculating gradients (SciML#639)
DABDF2 crashes (probably related to analytic Jacobian computation) (SciML#641)
UndefVarError: pprint_impl not defined during precompilation on Julia 1.4.2 (SciML#643)
Could not load symbol jl_function_ptr (SciML#644)
Unable to specify noise process on RODEProblem (SciML#645)
Need an adjoint for constructor Pair (SciML#649)
error on using DifferentialEquations (SciML#652)
Error: unexpected values in bisection (SciML#653)
changing the ODEfunction in affect! (SciML#654)
Error: Non bracketing interval passed in bisection method (SciML#656)
matching error when trying to run the example in tutorial (SciML#657)
ERROR: UndefVarError: top not defined (SciML#658)
Method Error after package update (SciML#659)
fail to load the package "Specialfunctions" due to requirements of DifferentialEquation package (SciML#660)
Solving NN System of SDEs, Tracker Error (SciML#661)
has_continuous_callback() missing for VectorContinuousCallback (SciML#662)
Illegal inttoptr for SEIR model (SciML#663)
Huge pre-compilation time (SciML#664)
Conflicting solutions when solving a matrix system. (SciML#667)
Inconsistent solutions when solving a Matrix ODE problem (SciML#668)
VectorContinuousCallbacks seem broken? (SciML#669)
Solve does not support saveat vectors for ensemble problems (SciML#671)
[question] Interpolating adjoint for DDEs (SciML#672)
Centralizing the development of .github actions, workflows, and metadata (SciML#673)
Solving difference equations (SciML#676)
ContinuousCallback not firing (SciML#677)
Implicit solvers crash when solving an ODE system that contain a Dierckx spline (SciML#678)
ArrayPartitions of ArrayPartitions fail with implicit ODE solvers (SciML#679)
Cannot Precompile DifferentialEquations.jl (SciML#683)
Issue calling solve on a DDEProblem (SciML#684)
How to define a time event after a state event (SciML#685)
UndefVarError when using EnsembleDistributed() (SciML#699)
Failed to precompile, load error (SciML#701)
Decoupling tspan and initial time, t0 (SciML#705)

Merged pull requests:

MassInstallAction: Install the TagBot workflow on this repository (SciML#690) (@christopher-dG)
MassInstallAction: Install the GitHubActionsCI workflow on this repository (SciML#698) (@christopher-dG)
CompatHelper: bump compat for "Reexport" to "1.0" (SciML#708) (@github-actions[bot])

## DifferentialEquations v6.15.0

2020-07-03T08:04:13Z

Diff since v6.14.0

Closed issues:

ArrayPartition doesn't work with SDE problems (SciML#386)
Monte Carlo simulations of JumpProblems with VariableRateJump (SciML#417)
save_onlyend simple argument syntax for solve only returning the end time (SciML#448)
How do you retrieve the algorithm chosen when one isn't specified? (SciML#484)
Add simple SDE solvers to the RegularJump interface (SciML#495)
ExtendedJumpArray broadcast is incompatible with non-constant scalars (SciML#508)
Re-branding for multiple language compatibility (SciML#519)
Indexing ragged size EnsembleSolutions (SciML#597)
Sobol example in Global Sensitivity Analysis Fails (SciML#605)
Precompile OrdinaryDiffEq failed (SciML#608)
Flag for saving outputs of inplace functions (SciML#609)
The end of concrete_solve (SciML#610)
Interpolation broken for jump diffusion solutions (SciML#613)
Untested edge case when stepping from the end of a known tspan (SciML#616)
MethodError: no method matching similar(::Float64) when using a vector of dimension 1 (SciML#619)
Performance of ODE solver on GPU in the presence of parameters (SciML#620)
Parameters are 'nothing' when passing as an explicit argument to ODEProblem (SciML#621)
Failed while USING DifferentialEquations.jl in Julia 1.4.1 (SciML#623)
vscode error running an open .jl file (SciML#627)
Dense solution is a 1st order linear interpolation, whereas 4th order spline was promised (SciML#629)
Working DAE example (SciML#630)

Merged pull requests:

Update README.md (SciML#612) (@mkg33)
Update LICENSE.md [ci skip] (SciML#614) (@YingboMa)
CompatHelper: bump compat for "DiffEqNoiseProcess" to "5.0" (SciML#626) (@github-actions[bot])
Fix method selection for Float32s (SciML#628) (@dextorious)

## DifferentialEquations v6.14.0

2020-05-15T15:02:28Z

Diff since v6.13.0

Closed issues:

DImplicitEuler and DABDF2 fail with LabelledArrays (SciML#581)
EnsembleProblem with JumpProblem yielding identical traces (SciML#585)
Using remake for EnsembleProblem (SciML#586)
LabelledArrays with Autodiff Stiff solvers (SciML#588)
Event repeated at the same time using ContinuousCallback and adaptive = false (SciML#590)
Suggestion for exploiting separable linear-nonlinear ODEs (SciML#591)
On Julia 1.5 importing produces warnings about fatally broken incremental compilation (SciML#593)
Discrete stochastic simulations method error (SciML#594)
Failed to precompule DifferentialEquation due to UndefVarError (SciML#595)
Reconfigure callbacks in the affect function (SciML#598)
Method Error when trying to solve an ODE (SciML#599)
Precompilation errors on both stable and master (SciML#602)

Merged pull requests:

CompatHelper: bump compat for "DiffEqNoiseProcess" to "4.0" (SciML#604) (@github-actions[bot])

## DifferentialEquations v6.13.0

2020-04-05T22:02:03Z

Diff since v6.12.0

Closed issues:

Rosenbrock23 gives wrongs solution when autodiff=false (SciML#580)
Example of using DifferentialEquations.jl for SIR model on a graph (SciML#583)

Merged pull requests:

CompatHelper: bump compat for "Sundials" to "4.0" (SciML#587) (@github-actions[bot])

## DifferentialEquations v6.12.0

2020-03-20T15:03:21Z

Diff since v6.11.0

Closed issues:

Docs: parameter dependence for ODEProblem (SciML#367)
Second order sensitivities (SciML#375)
Sparse matrices as parameters - MethodError: Cannot convert an object of type Tuple{SparseMatrixCSC{Float64,Int64},...} (SciML#378)
L2Loss() fails for Monte Carlo problems if saveat is not used (SciML#392)
Jacobians for SDEs (SciML#402)
Performance Issue: Interpolation of callbacks with StaticArrays (SciML#407)
Find a console-based progress monitoring package that works (SciML#424)
DifferentialEquations and Unitful (SciML#455)
Using CuArrays with complex arrays (SciML#460)
Simultaneous Zero-crossing behavior (SciML#516)
DifferentialEquations fail during precompile (SciML#539)
ContinuousCallback: affect! is not always called at the crossed condition (SciML#551)
Default to having progress bars on? (SciML#562)
concrete_solve example in the docs doesn't work (SciML#569)
Event Handling - Tutorial (Example 1: Bouncing Ball) (SciML#570)
Use an array of arrays as u prototype (SciML#572)
Julia 1.3.1-2 the new update caused the following error when trying to install the differential equations package (SciML#573)
Investigations of BLAS overloading for Dual numbers (SciML#574)
This is a trival set of mistakes I found... spelling mistakes in the websites of GSoC in JSoC. (SciML#576)
Error if there is a callback both in the problem and when solving (SciML#578)

Merged pull requests:

Add back ModelingToolkit-based ParameterizedFunctions (SciML#579) (@ChrisRackauckas)

v6.11.0

2020-02-12T07:09:17Z

Don't test on earlier Julia versions anymore

v6.10.1

2020-01-11T06:22:21Z

See github.com/JuliaDiffEq/DifferentialEquations.jl/releases/tag/v6.1…

v6.10.0

2020-01-09T06:09:59Z

See github.com/JuliaDiffEq/DifferentialEquations.jl/releases/tag/v6.1…

v6.9.0

2019-11-30T22:48:57Z

See github.com/JuliaDiffEq/DifferentialEquations.jl/releases/tag/v6.9…

v6.8.0

2019-09-14T22:21:29Z

See github.com/JuliaDiffEq/DifferentialEquations.jl/releases/tag/v6.8…