Allow initialization to set the starting value and save

v2.20.0

Merge remote-tracking branch 'origin/master'

Some more bugfixes

v2.19.1

Merge remote-tracking branch 'origin/master'

New SSPRK and changes for state-dependent delays

Merge pull request #186 from devmotion/dde_updates

Add support for AbstractContinuousCallback and arbitrary discontinuities

New RKN, SSPRK, cache fixes for stiff DDE, MidpointSplitting

Merge pull request #176 from devmotion/fix_forwarddiff_interpolant

Enable autodifferentiation of in-place interpolants

DiffEqDevTools, high order RKN, ImplicitMidpoint, Exponential RKs

Merge pull request #164 from devmotion/sdirk_update

WIP: Update of SDIRK and generic implicit integrators

Export OrdinaryDiffEqAlgorithm again

Too many people relied on this for dispatch it seems. And this releases a few RKN solvers.

SDIRK Methods

v2.15.0

fix extrapolation timings

Internals rework, broadcast on small loops, new RK methods and adaptivity

Merge pull request #129 from devmotion/verner_rk_eest

Update tableaus and error estimate calculation of Verner RK methods

Nystrom methods and redone ImplicitEuler, Trapezoid, added TRBDF2

v2.13.0

Merge branch 'nystrom'

Use MuladdMacro.jl and fix warn printing

v2.12.0

only warn when verbose and update REQUIRE to no muladd diffeqbase