Release 1.8.1

[AurelicButter]

Fixes

• Fixed a typo in typings for MediaTitle.romaji instead of MediaTitle.romanji. (#25)
• Fixed a mistype in PersonRelation.name. PersonRelation.name is a string and does not contain a english value. (#25)
• MediaEntry now list characters and staff as an array of PersonRelation instead of just one person.
• MediaEntry now lists relations as an array of MediaRelation instead of just one relation.
• MediaEntry now references PersonRelation instead of defining the value itself. Also, name does not have an english value and is a string.