fix v0.7 indexing

[ChrisRackauckas]

No description provided.

[coveralls]

Coverage decreased (-2.4%) to 63.158% when pulling c4462c5 on 7 into 9c4a4f4 on master.

[codecov]

Codecov Report

Merging #29 into master will decrease coverage by 2.35%.
The diff coverage is 16.66%.

@@            Coverage Diff             @@
##           master      #29      +/-   ##
==========================================
- Coverage   65.51%   63.15%   -2.36%     
==========================================
  Files           5        5              
  Lines         232      228       -4     
==========================================
- Hits          152      144       -8     
- Misses         80       84       +4

Impacted Files	Coverage Δ
src/utils.jl	44.11% <ø> (-5.24%)	⬇️
src/array_partition.jl	74.33% <0%> (-2.03%)	⬇️
src/vector_of_array.jl	68.18% <33.33%> (-3.25%)	⬇️

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