Avoid adding newlines to output by default

[itskingori]

When newlines are hardcoded in the library, all user's of this library are forced into that ui-design choice without a way to modify that behaviour. This way, user's can opt to add newlines as they wish ... in their own tools.

For example, in the example below ... I would like not two have two empty lines after "Failed to validate". And even if I did, I'd prefer to have to add them myself for flexibility.

Before:

$ cli-tool-that-does-something
What is your token uuid?
Enter a value: afdsf
Failed to validate input string: afdsf


Enter a value: 2343242

After:

$ cli-tool-that-does-something
What is your token uuid?
Enter a value: afdsf
Failed to validate input string: afdsf
Enter a value: 2343242

I took the liberty to remove other newlines.

[thedillonb]

@tcnksm any chance you could provide some feedback on this? The newlines are definitely odd and would be welcome if they were removed.