```elixir
def deps do
  [{:tapex, "~> 0.1.0", only: :test}]
end
```

```elixir
  ExUnit.configure formatters: [Tapex]
  ExUnit.start()
```

$ mix test --no-color
TAP version 13
ok       1 test format_counts/1 displays passed failed and skipped (Elixir.Tapex.ReportTest)
ok       2 test format_counts displays colors when enabled (Elixir.Tapex.ReportTest)
ok       3 Elixir.Tapex.ReportTest
not ok   4 test format_plan (Elixir.Tapex.TapTest)
#       1) test format_plan (Tapex.TapTest)
#          test/tapex/tap_test.exs:6
#          Assertion with == failed
#          code: format_plan(1) == "1.1"
#          lhs:  "1..1"
#          rhs:  "1.1"
#          stacktrace:
#            test/tapex/tap_test.exs:8: (test)
ok       5 test format_header (Elixir.Tapex.TapTest)
ok       6 Elixir.Tapex.TapTest
ok       7 test format_line with todo and message (Elixir.Tapex.LineTest)
ok       8 test format_line with color (Elixir.Tapex.LineTest)
ok       9 test format_line for fail (Elixir.Tapex.LineTest)
ok      10 test format_line with skip (Elixir.Tapex.LineTest)
ok      11 test format_line for pass (Elixir.Tapex.LineTest) # SKIP This test is flappy
ok      12 Elixir.Tapex.LineTest
ok      13 test format_diagnostic for test without color (Elixir.Tapex.DiagnosticTest)
ok      14 test format_diagnostic for TestCase with color (Elixir.Tapex.DiagnosticTest) # TODO Make assertions less strict
ok      15 Elixir.Tapex.DiagnosticTest
ok      16 test :case_finished prints TAP line (Elixir.TapexTest)
ok      17 test :suite_finished prints a report (Elixir.TapexTest)
ok      18 test init returns config (Elixir.TapexTest)
ok      19 test :test_finished event prints TAP line (Elixir.TapexTest)
ok      20 Elixir.TapexTest
1..20

Finished in 0.1 seconds
20 tests, 18 passed, 1 failed, 1 skipped, 1 todo

Randomized with seed 484706