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Our users are often confused by the output from programs such as zip2john sometimes being very large (multi-gigabyte). Maybe we should identify and enhance these programs to output a message to stderr to explain to users that it's normal for the output to be very large - maybe always or maybe only when the output size is above a threshold (e.g., 1 million bytes?)

This is a follow-up to v2.0 #65 to switch the default parsing on supported systems so we support BigInt strings transparently.

Currently the Heap tests in ./Tests/PriorityQueueTests/HeapTests.swift are relying on @testable import to access internal interfaces. Unfortantely this doesn't work in release mode, so we can only run heap tests in debug builds.

We ought to be able to run these correctness tests with optimizatio

Description

A function to pad a string with zeros or another symbol to a given width could be helpful in many cases, especially together with the to_string() function for integer to string conversion.

Currently available methods to achieve this are using concatenation

width = 32
str = "hello"
padded_str = repeat('0',width-len(str)')//str

and perhaps also internal file I/O