v6.0

[BREAKING][feature][ios] New snackbar for old toast setup that everyone complained about (thanks to Marc Bruins - https://github.com/MarcBruins)
[feature][ios] Better looking date/time picker (thanks to Marc Bruins - https://github.com/MarcBruins)
[feature] Toasts are also dismissable from code now (via disposable)
[feature][droid] Make actionsheets look like bottomsheets from the design library - Set ActionSheetConfig.UseBottomSheet = true
[feature][droid] Ability to set style on alert based dialogs using AndroidStyleId
[fix][ios] destruction button should be at the top on iOS actionsheets
[fix][droid] fixes for fragment dialogs
[fix][droid] classic (non-appcompat) dialogs would not always appear from background threads