Dict cleanup legacy working

[folkertdev]

The bits from #237 that do not run into a bounds check.

[codecov]

Codecov Report

❌ Patch coverage is 67.36842% with 31 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
lib/dictBuilder/zdict.rs	67.36%	31 Missing ⚠️

Flag	Coverage Δ
test-aarch64-apple-darwin	33.51% <67.36%> (-0.14%)	⬇️
test-aarch64-unknown-linux-gnu	31.58% <67.36%> (-0.04%)	⬇️
test-i686-unknown-linux-gnu	31.63% <67.36%> (-0.05%)	⬇️
test-x86_64-unknown-linux-gnu	33.60% <67.36%> (-0.08%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
lib/dictBuilder/zdict.rs	70.20% <67.36%> (-3.33%)	⬇️

... and 3 files with indirect coverage changes

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