This is for 3.0. For 3.1dev, see #2332 .
This PR addresses the bug #2330 by implementing a function which removes control characters from the file output format html,csv,json in the output.
In every instance called there's a check before whether the string contains control chars, hoping it'll save a few milli seconds.
A tr function is used, omitting LF.
It doesn't filter the terminal output and the log file output, yet. It provides a function though which is not being called.
... by adding the formerly intruoced "DEBUG" statement as a filter.
Note: "DEBUG" can now / should now be taken preferably for extra
output on debug level 1.
Replacing badssl.com by testssl.net. The former needed almost 5 min
for a run, whereas one IP of testssl.net needs ~80 secs. With --fast
even less.
