Add the ability to read persisted (.clsrecord) crash files#4762

jasonhu-g merged 4 commits intocrashlytics-firelogfirebase/firebase-ios-sdk:crashlytics-firelogfrom

jasonhu-crashlytics-firelog-readfilesfirebase/firebase-ios-sdk:jasonhu-crashlytics-firelog-readfilesCopy head branch name to clipboard