exceptionDate should be optional in typescript

[anhnch]

As I look into the code, the exceptionDate option is actually not required. But the typescript types shows it as required. Not really a bug, but it's quite inconvenient. Is there a way to walk around this until the next release?

export interface Options {
  /** The start date of a recurring event's exception instance. Used for updating single event in a recurring series. */
  exceptionDate: ISODateString;
  /** iOS ONLY - If true the update will span all future events. If false it only update the single instance. */
  futureEvents?: boolean;
}

[MoOx]

2.1.2 is out with a fix!