DataArrayProxy converting dimensions from double to size_t from JSON

[JDuffeyBQ]

In DataArrayProxy::readVector, an array of numbers is read from JSON and converted to a std::vector<size_t>. This function is used to read the tuple and component dimensions from JSON. This function does some checks on the range of acceptable values; however, it does not report any errors and has an implicit conversion between double and size_t inside its check. For exceedingly large datasets this would be an issue when attempting to read and write their dimensions.

A possible solution would be to store the dimensions as a string though this would affect backwards compatibility in pipeline files. Additionally better error reporting should be implemented to tell the user why the read failed.