Document allowed dependencies (#33 / #56)
Document allowed dependencies (#33 / #56)

JUnit Pioneer, like JUnit 5, strives for ease of use in all kinds of
projects, which would be complicated by taking on runtime
dependencies. That's why we don't do it.

Compile and test dependencies should also not go overboard, so we
settled on a set of required dependencies (for now).

CodeFX-org/junit-io,nicolaiparlog/junit-pioneer