replacer Completer dynamic type with void

reverted sdk constraint

added CollectionModel.indexes and SettingsService.generateAppleClient…

…Secret

replaced manual last index accessor with last getter

[#1833] added support for handling non-json responses on pb.send()

added check for the collection name before auto updating the pb.authS…

…tore state on auth record update/delete

allowed sending Authorization header with authWithPassword() calls

added HealthService

updated readme

changed confirm endpoints return result