Fix reshape for OneElement when indices lie outside axes

[jishnub]

Fixes issues like

julia> A = OneElement(4, 3)
3-element OneElement{Int64, 1, Tuple{Int64}, Tuple{Base.OneTo{Int64}}}:
 ⋅
 ⋅
 ⋅

julia> reshape(A, 1, 3)
ERROR: BoundsError: attempt to access 3-element LinearIndices{1, Tuple{Base.OneTo{Int64}}} at index [4]

After this,

julia> reshape(A, 1, 3)
1×3 OneElement{Int64, 2, Tuple{Int64, Int64}, Tuple{Base.OneTo{Int64}, Base.OneTo{Int64}}}:
 ⋅  ⋅  ⋅

The index of the non-zero element is arbitrarily chosen to lie beyond the range of the Cartesian indices.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.91%. Comparing base (9868632) to head (1ad13a5).
Report is 6 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #378   +/-   ##
=======================================
  Coverage   99.90%   99.91%           
=======================================
  Files           8        8           
  Lines        1110     1112    +2     
=======================================
+ Hits         1109     1111    +2     
  Misses          1        1           

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[jishnub]

Gentle bump. There are a few bugfix PRs (labelled as such) that may probably be merged soon.