Bump version to 0.17.1

[thofma]

No description provided.

[codecov]

Codecov Report

Merging #879 (36ff2f8) into master (665821b) will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #879      +/-   ##
==========================================
+ Coverage   81.67%   81.69%   +0.01%     
==========================================
  Files          56       56              
  Lines       19633    19633              
==========================================
+ Hits        16036    16039       +3     
+ Misses       3597     3594       -3     

Impacted Files	Coverage Δ
src/generic/Matrix.jl	91.30% <0.00%> (-0.16%)	⬇️
src/generic/RelSeries.jl	95.41% <0.00%> (ø)
src/generic/SparsePoly.jl	26.92% <0.00%> (+0.08%)	⬆️
src/generic/Poly.jl	92.05% <0.00%> (+0.11%)	⬆️
src/generic/LaurentSeries.jl	93.52% <0.00%> (+0.50%)	⬆️

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[thofma]

Oscar is failing as expected, but we need to get this out to merge the Nemo PRs.