prep 3.3.0 release

[echo-branch]

Reference

iOS SDK 3.3.0 release

Summary

Release iOS SDK 3.3.0 with a behavior change when opening a closed app with a link.

Motivation

SDK behavior change to fix a race condition when opening a closed app with a link. In some apps, this race condition could cause the occasional loss of link data.

When opening a closed app with a link, the Branch SDK will no longer attempt to merge the app open and link arrival lifecycle events. Apps will now get called on "app open" and on "link arrival", which are often very close together. If your app ignores callbacks with no link data, then this change should be transparent.

Type Of Change

• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Testing Instructions

cc @BranchMetrics/saas-sdk-devs for visibility.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (e561653) 51.27% compared to head (16aae6a) 51.51%.
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1354      +/-   ##
==========================================
+ Coverage   51.27%   51.51%   +0.23%     
==========================================
  Files          66       66              
  Lines       10092    10092              
  Branches     3697     3698       +1     
==========================================
+ Hits         5175     5199      +24     
+ Misses       4654     4628      -26     
- Partials      263      265       +2     

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