NLsolve update

[devmotion]

This PR makes use of the new NLsolve release which allows AbstractArray instead of Vector. I could simplify caches of all methods that use NLSOLVEJL_SETUP, i.e. of GenericImplicitEuler, GenericImplicitTrapezoid, GenericIIF1, and GenericIIF2. Moreover, the proposed changes supersede the definition of NLSOLVEJL_SETUP in DiffEqCallbacks and hence supersede also SciML/DiffEqCallbacks.jl#17.

[coveralls]

Coverage increased (+0.02%) to 76.734% when pulling 36f7603 on devmotion:nlsolve into 822ae90 on JuliaDiffEq:master.

[codecov]

Codecov Report

Merging #217 into master will increase coverage by 0.01%.
The diff coverage is 66.1%.

@@            Coverage Diff             @@
##           master     #217      +/-   ##
==========================================
+ Coverage   76.71%   76.73%   +0.01%     
==========================================
  Files          61       61              
  Lines       21444    21430      -14     
==========================================
- Hits        16451    16444       -7     
+ Misses       4993     4986       -7

Impacted Files	Coverage Δ
src/integrators/iif_integrators.jl	0% <0%> (ø)	⬆️
src/caches/linear_nonlinear_caches.jl	0% <0%> (ø)	⬆️
src/integrators/generic_implicit_integrators.jl	95.37% <100%> (-0.03%)	⬇️
src/integrators/integrator_interface.jl	71.21% <100%> (-0.85%)	⬇️
src/caches/generic_implicit_caches.jl	94.73% <100%> (-0.62%)	⬇️
src/misc_utils.jl	77.27% <100%> (+0.52%)	⬆️

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