ENH: implement fast lookups for module location and version

[neutrinoceros]

closes #140

[codecov]

Codecov Report

Merging #161 (8af25ef) into main (5a7fcd3) will increase coverage by 0.07%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #161      +/-   ##
==========================================
+ Coverage   98.16%   98.23%   +0.07%     
==========================================
  Files          10       10              
  Lines         435      454      +19     
==========================================
+ Hits          427      446      +19     
  Misses          8        8              

Flag	Coverage Δ
unittests	98.23% <100.00%> (+0.07%)	⬆️

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Impacted Files	Coverage Δ
wxc/cli.py	95.09% <100.00%> (+1.12%)	⬆️

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