Test errors are different (represented differently in the JUnit XML
output from jest-junit) to test _failures_. Failures are tests
which ran and failed, errors are for tests/test suites which
did not even run because the test code itself didn't build
or didn't execute correctly.
jest-junit has an option to enable reporting of test suite errors,
but test-reporter then interprets these as successful tests.
Previously we listed tests using markdown tables. Each test group had it's own table and textual preface saying how many tests were executed in what time.
This was completely reworked - now tests are listed inside code block. Grouping is achieved using simple indentation. Duration of individual tests is no longer shown - it produced too much "noise" in the report. Pass/Fail check-mark was also moved before name of test suite.
Behavior of "listTests" option was also changed - now if set to failed, it will list all tests, but only if suite is failed. Otherwise test listing is completely omitted.
Last change affects report trimming - if report is still too big after "listTests" is set to "failed" - it will trim report to fit max size and add informational message at the end.
