Handle non-vector inputs

[ChrisRackauckas]

No description provided.

[codecov]

Codecov Report

Merging #254 (0640676) into master (2fd9480) will increase coverage by 0.01%.
The diff coverage is 27.77%.

❗ Current head 0640676 differs from pull request most recent head e8778ed. Consider uploading reports for the commit e8778ed to get more accurate results

@@            Coverage Diff             @@
##           master     #254      +/-   ##
==========================================
+ Coverage   25.54%   25.56%   +0.01%     
==========================================
  Files          15       15              
  Lines        1194     1197       +3     
==========================================
+ Hits          305      306       +1     
- Misses        889      891       +2     

Files	Coverage Δ
src/NonlinearSolve.jl	84.21% <ø> (ø)
src/jacobian.jl	71.01% <0.00%> (ø)
src/utils.jl	56.07% <50.00%> (-0.12%)	⬇️
src/trustRegion.jl	31.84% <66.66%> (ø)
src/levenberg.jl	0.00% <0.00%> (ø)

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