Started moving toward dynamical allocation; removed the _loc variables which were only used in the zeroth step and were pretty unnecessary anyway

config.cpp

@@ -5,6 +5,8 @@
 #include <algorithm>
 #include <limits>
 
+// Would be a bit more elegant to do the whole thing with std::variant.
+
 using Dictionary = std::unordered_map<std::string,std::string>;
 
 static constexpr double nix = -std::numeric_limits<double>::max(); // avoid nans