Improve feedback of failed assertions in Julia

[hobovsky]

Similar to #235 and #222 : failed assertions in Julia print to <LOG::> instead of <FAILED::>:

If the direct reason for using <LOG::> is no longer relevant, Julia reporter could be improved just like LUA and Golang ones recently.

[kazk]

The repo is https://github.com/codewars/FactCheck.jl

[hobovsky]

Kumite with example test suite: https://www.codewars.com/kumite/63ffce08babb196de6d63ad5

Identified issues:

• Failure messages are displayed as an unstructured line instead of <FAILED::>. Note: the direct cause seems to be not the same as Improve handling of assertion messages in golang #222 and Improve feedback of failed assertions in LUA #235 but rather a simple bug in the Julia reporter.
• The way how @fact is translated into a tuple of <IT::> and <PASSED::> or <FAILED::> makes test output awkward sometimes
  • Custom assertion messages are displayed as <IT::> titles instead of <FAILED::> messages
  • Failed fact_throws gives awkward feedback
• Stacktraces are displayed as an unstructured line instead of <LOG::> container
• Non-standard assertion functions are stringified poorly
• \t used in some messages causes that multiline formatted elements may not line up correctly
• Durations are missing
• Multiline group titles are missing <:LF:> and leak into a <LOG::>
• Crashing tests do not show <ERROR::>
• Not sure if @pending is displayed correctly

[kazk]

Deployed codewars/FactCheck.jl#2