Reading and writing spline from file #89
Description
When the option to read a spline from a file was implemented in HOHQMesh, HOHQMesh.jl was not fully updated. As currently implemented, *.jl cannot read a control file where the spline data comes from a file, and when writing, instead of giving a path to the file, it imbeds the spline data into the control file. (This means that when used only interactively, saving and reopening a control file works.)