ValueError if parse_date gets none valid input

[openenergyplatform]

ValueError if parse_date gets none valid input

[MGlauer]

Yes, this is part of a larget issue, namely me not beeing aware of the fact that we do not have mandatory fields. I am working on it in features/everything_is_optional

[christian-rli]

Was this issue addressed in #13 ? I tried to parse a sample OEP-1.3 file after the merge and for testing purposes changed the date to "none". I got the following (same?) Error:

    raise ValueError("Unknown string format:", timestr)
ValueError: ('Unknown string format:', 'none')

[MGlauer]

Omi is able to parse the string

{
    "id": "id"
}

correctly in v1.3 and v1.4. Therefore I consider this closed