Add missing DDEIntegrator methods

v1.8.1

Merge remote-tracking branch 'origin/master'

Update for OrdinaryDiffEq changes

v1.8.0

Update REQUIRE

Fix for DiffTools

v1.7.0

update for namespace changes

Update for cache changes in OrdinaryDiffEq

v1.6.0

remove vecing

DDE reinit

Merge pull request #53 from devmotion/reinit2

Implement reinit

Fix type of dtacc to be compatible with newest OrdinaryDiffEq

Merge pull request #52 from devmotion/fix_dtacc

Fix type of dtacc

Fix for newest OrdinaryDiffEq

Merge pull request #51 from devmotion/fix_nlsolve

Update to NLsolve changes in OrdinaryDiffEq

constant delays nothing fixes

Merge pull request #48 from devmotion/nothing_test

Add test for constant_delays = nothing

nothing constant lags allowed

v1.2.0

Remove ConstantLagDDEProblem  and allow no constant lag

DiffEqBase 2.0.0 compatibility

v1.1.0

Update REQUIRE