Vladislav Drannikov

@shafali538 change strategy to localStorage if you are using BroadcastChannelAPI because Safari [doesn't support it](https://caniuse.com/broadcastchannel).

And also there is a method https://github.com/amitava82/angular-multiselect/blob/master/src/multiselect.js#L235 that accepts true as an argument. but why should we always call it with an argument if we have local variable as isMultiple...

so got next situation: we have single select. when we use it and select items in dropdown this method is fired https://github.com/amitava82/angular-multiselect/blob/master/src/multiselect.js#L165 we call setModelValue twice: with different opposite arguments....