1.1.0

This release changes the usage of ToString methods on both Document and Node to using a ToStringOptions structure for the parameter rather than a mess of parameters. This way, if more options are added to the method, they can be changed out and added without having to worry about your code breaking.

In non-user facing changes, I changed the CMake C++ compile version to C++17 so that I could use std::string_view for non-copying strings rather than a const std::string&. If this could cause a problem for you using the library, let me know and I could try and find an easy fix.