Update km3net dataformat

See merge request km3py/km3io!58

Resolve "Missing status and mother_id in offline reader"

Closes #80

See merge request !54

Resolve "New KM3NeT Dataformat Release v2.0.0"

Closes #78

See merge request !55

Resolve "Hit time field is now tdc!"

Closes #77

See merge request !53

Update km3net dataformat

See merge request !51

Fallback to dictionary/tuple for invalid attributes

See merge request !50