Run doctests for Julia 1.6

[tkf]

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[codecov]

Codecov Report

Merging #223 (6d281c8) into master (3aeff51) will increase coverage by 0.56%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #223      +/-   ##
==========================================
+ Coverage   90.82%   91.38%   +0.56%     
==========================================
  Files          22       22              
  Lines         534      534              
==========================================
+ Hits          485      488       +3     
+ Misses         49       46       -3     

Flag	Coverage Δ
unittests	91.38% <ø> (+0.56%)	⬆️

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Impacted Files	Coverage Δ
src/NoBang/emptycontainers.jl	92.85% <ø> (ø)
src/base.jl	84.37% <ø> (+0.78%)	⬆️
src/collectors.jl	100.00% <ø> (ø)
src/extras.jl	100.00% <ø> (ø)
src/linearalgebra.jl	73.68% <ø> (ø)
src/macro.jl	100.00% <ø> (ø)
src/NoBang/base.jl	91.86% <0.00%> (+2.32%)	⬆️

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