* Support trailing return type.
* Ignore C++14 digit separators.
* Parse C++14 binary number representations.
* Support "using"-style type aliases.
* Support decltype and auto with "new".
* Remove silly "long float" and "long long float".
* Support default visibility with class inheritance.
* Remove -longlong hack since C++11 supports long long natively.
* Support unary plus operator.
* Preserve bitfield definitions.
* Support constructor inits using braces.
* Support override/final specifiers.
* Ignore [[attributes]] in certain cases
* Add support for typeid() in expressions
* Parse (but ignore) lambda expressions
* Differentiate between casts, add const_cast/reinterpret_cast
* Support thread_local variables.