Created by: williamfgc
Enable adios2 bindings for Python 2.7.x, 3.5 with PyBind11 Removed boost.python dependencies Replaced IO class variadic template arguments for vector ("key=value") and map<string,string> {"key", "value"} versions.
Changes to make core headers completely "public" as needed by external bindings: Variable.inl to Variable.tcc VariableCompound.inl now independent (removed adios2/helper/adiosFunctions.h dependency)
To do: Add tests with other Engines