Create a template processor for the EPANET format

[tasseff]

To ensure interoperability with EPANET (e.g., for further testing of design and control decisions), a template processor must be developed that converts solution data from the internal data model to a file that conforms to the EPANET format.

[ccoffrin]

a.k.a. export_epanet?

[tasseff]

Indeed... it looks like this will be a useful reference on the Julia side and this will be a useful reference on the parsing and templating side.