Siren

Thanks to #422 (@spigarellisj) and #420 (@skyfoxa) - added the privacy manifest.

Forgot to update the podspec in 6.1.1. All good now.

• #411: Thanged minimum supported version to IOS 13 now that aysnc/await works with older version. (Thanks to @blerdfoniqi)

• #404: Custom Bundle Identifiers can now be passed into the wail() method (thanks @developforapple)
• #405: Fixes a very old bug respecting the skipped version flag even if the app was remotely triggered to change the siren setting to be a .force update (via some config file). (thanks @aburgel)

• #397 & #396: Fixes a very specific edge case scenario around having the update dialog not appear if the user is launching the app via a notification center. If in this scenario the update modal is scheduled to appear, it wouldn't appear in the past. With this fix, it now appears. Thanks to @keyboardseokmin for discovering this issue and submitting the fix.