Fix default tolerance for complex

[ChrisRackauckas]

Fixes #38

[codecov]

Codecov Report

Merging #58 (50331e2) into main (d8054e0) will decrease coverage by 0.99%.
The diff coverage is 54.54%.

@@            Coverage Diff             @@
##             main      #58      +/-   ##
==========================================
- Coverage   86.11%   85.12%   -1.00%     
==========================================
  Files           6        6              
  Lines         353      363      +10     
==========================================
+ Hits          304      309       +5     
- Misses         49       54       +5     

Impacted Files	Coverage Δ
src/common.jl	68.18% <25.00%> (-4.32%)	⬇️
src/pardiso.jl	81.25% <71.42%> (-2.09%)	⬇️

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