Resolve "Duration struct's fields are private"

Closes #7 (closed)

This MR also adds a From<(u64, Unit)> implementation for the Duration type for convenience.

added fix label

added 2 commits

• 0a556241 - fix: make Duration struct fields pub
• f22ab005 - add From<(u64, Unit)> impl for Duration

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marked this merge request as ready

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merged

mentioned in commit fa2dd0b5