Missing string escaping for \r

[non]

From cats-parse I'm seeing this output:

  + wsp rejects all but single char 0.001s
\n 0.0sf accepts
\n 0.003srejects all but
  + lwsp accepts all linear white space 0.011s

The original test names are "crlf accepts \r\n" and "crlf rejects all but \r\n".

I think munit is not escaping \r properly (although it does seem to escape \n). The caller can definitely fix this by escaping their own strings but it seems friendly to have munit do this (especially if test names contain unexpected characters).

[olafurpg]

Thank you for reporting! This should be fixed in #261, the test report for a suite that stresses escaping now looks like this

[olafurpg]

Kickstarted https://github.com/scalameta/munit/releases/tag/v0.7.18