- Add ability to specify custom plugins (thanks @iloire and @tbasse!) - change `CUSTOM_PLUGINS` dir in your local settings;
- API responses have better JSON formatting for origin errors (thanks @iloire and @tbasse!);
- Keeping up with various domain changes;
- Better widgets for Apple Music;
- Added piktochart, padlet and KHL.

SemVer is raised not because it's not backwards compatible, but simple because it's time as Iframely has been over 4 years in the making now. Error handling may need a bit of change though if you relied on the text messages.