Print SFG

Description of issue:

The program should be able to print a SFG in a way so that is clear to the user that the data printed is a SFG. The representation should contain any data relevant to the evaluation and representation of the SFG.

Linked Requirements:

( 31 )

Potential Issues:

The data to be printed is currently unknown and might depend on previous implementation of #12 (closed).

Blockers:

( #12 (closed) )

Issue Requirements:

1. Given a valid SFG, then the program should be able to represent and present the SFG in a human readable and clear way to the user in text-form.
2. This print should not in any shape modify the SFG.

Comment:

For more details on data needed please discuss in the issue. Please document the data that is decided to be printed in this issue.