Fix explain bug with RuleSelector, improve explain output #110
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While trying out 7a4b965 in #108, I found that the
explain
command was no longer working properly. This PR fixes the bug, and while I was at it I also improved the output forexplain
, updated the README, and improved the help text that's printed when things go wrong.explain
now prints the name of the rule alongside the code, but it's in camel-case. There are a few Rust libraries that allow you to convert to other cases, like sentence case, but these aren't clever enough to renameIOError
toIO error
orNonStandardFileExtension
toNon-standard file extension
, so for now I've left it at camel-case.