First pass at implementing log10/2 scale

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[codecov-commenter]

Codecov Report

Merging #97 (11074ca) into master (4f85e10) will increase coverage by 0.01%. The diff coverage is 97.00%.

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@@            Coverage Diff             @@
##           master      #97      +/-   ##
==========================================
+ Coverage   89.60%   89.61%   +0.01%     
==========================================
  Files         107      109       +2     
  Lines        5425     5479      +54     
==========================================
+ Hits         4861     4910      +49     
- Misses        429      433       +4     
- Partials      135      136       +1     

Impacted Files	Coverage Δ
cmd/helpers/extractorBuilder.go	83.24% <ø> (ø)
cmd/helpers/output.go	95.00% <ø> (ø)
cmd/helpers/scaler.go	78.57% <78.57%> (ø)
cmd/heatmap.go	93.61% <100.00%> (+0.28%)	:arrow_up:
pkg/multiterm/termrenderers/heatmap.go	95.79% <100.00%> (-0.30%)	:arrow_down:
pkg/multiterm/termscaler/scale.go	100.00% <100.00%> (ø)
pkg/multiterm/termunicode/heat.go	100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes