Add field trace and field norm

[mhostetter]

No description provided.

[codecov]

Codecov Report

Merging #189 (97660e6) into master (c294e5c) will increase coverage by 0.12%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #189      +/-   ##
==========================================
+ Coverage   92.68%   92.80%   +0.12%     
==========================================
  Files          38       38              
  Lines        4292     4309      +17     
==========================================
+ Hits         3978     3999      +21     
+ Misses        314      310       -4     

Impacted Files	Coverage Δ
galois/_ntt.py	93.33% <ø> (ø)
galois/_fields/_array.py	94.02% <100.00%> (+0.40%)	⬆️
galois/_fields/_gf2m.py	91.34% <100.00%> (ø)
galois/_fields/_gfpm.py	94.94% <100.00%> (ø)
galois/_polys/_poly.py	94.04% <0.00%> (+0.55%)	⬆️
galois/_fields/_properties.py	100.00% <0.00%> (+1.25%)	⬆️

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