MockTextTerminal strips out new lines #35
Description
On calling org.beryx.textio.mock.MockTextTerminal#getOutput the returned string has all the new lines and leading/trailing spaces removed because org.beryx.textio.mock.MockTextTerminal#stripAll is called on the stored string before returning it.
Given that the output is joined using the new line as separator, I assume this has been done in order to have a uniform and linear output.
Unfortunately, this doesn't allow to test certain scenarios, like "Does the output ends with a new line?".
In my opinion, stripping should be an option that the consumer of the class can decide to use or not.
A simple overload of getOutput() with a boolean flag would be enough :)