NCC audit fixes

[fjarri]

• Fixed some comment typos
• Added a max_bit_length == 0 check in Sieve::new() (NCC-E008526-K2E)
• Replaced wrapping_add() with checked_add() calls to detect possible contract violations early (NCC-E008526-QTR)
• Removed a check for a == i32::MIN in jacobi_symbol() (abs_diff() handles this case just fine)
• Using A* by default for the Lucas test

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.01 🎉

Comparison is base (c6bbdf3) 98.63% compared to head (e1fdbe6) 98.65%.

❗ Current head e1fdbe6 differs from pull request most recent head 537a097. Consider uploading reports for the commit 537a097 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #26      +/-   ##
==========================================
+ Coverage   98.63%   98.65%   +0.01%     
==========================================
  Files          10       10              
  Lines        1320     1339      +19     
==========================================
+ Hits         1302     1321      +19     
  Misses         18       18              

Impacted Files	Coverage Δ
src/hazmat/jacobi.rs	100.00% <100.00%> (ø)
src/hazmat/lucas.rs	98.63% <100.00%> (ø)
src/hazmat/miller_rabin.rs	99.46% <100.00%> (+<0.01%)	⬆️
src/hazmat/sieve.rs	100.00% <100.00%> (ø)

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