This commit also changes the "fix" for text-only lines. We should be adjusting the text content as little as possible. In this case, we are still adding spaces (or tabs) after the last line break, but that is necessary to indent the closing element. I'll continue to adjust this as needed based on feedback and possibly add a setting to gate this behavior.
#137
This change means we can't use the harness provided by VS Code, but that's fine for now. I only intend to test service classes that generally don't have concrete dependencies on VS Code anyway.
