feat: make errors spanned in computations#1

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SolarLiner wants to merge 3 commits intomainfrom

Commits on Nov 22, 2021

feat: make errors spanned in computations
SolarLiner
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Commits on Nov 23, 2021

feat: put utility types in utils crate
SolarLiner
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Commits on Nov 24, 2021

feat: Position<_> abstraction with span and file reference
SolarLiner
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