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Time and numbers

Work with dates and durations, format and convert numbers, and generate repeatable random values.

DatesStart and end of periods, business days, age, relative time, date ranges, ISO weeks, weekday lookups, Unix time and rounding for DateTime, with "now" always passed in.
DurationsCreate TimeSpan values fluently with 5.Minutes() or 1.5.Hours(), place them before or after a moment, describe them in words and round them to an interval.
NumbersOrdinals, words, Roman numerals, file sizes, compact counts, rounding to a step, fractions, percentages, digits, rescaling, clamping and half-open ranges.
RandomExtension methods on System.Random that pick items, shuffle lists and generate booleans, ranged numbers, strings, enums, dates, durations, normal samples and GUIDs, repeatable with a seed.