Fixing crash occurring in mParticle sdk when user kills application

7.4.1-qadeployment

Merge branch 'master' into qadeployment

Updating mparticle-apple-sdk to 7.3.9

7.3.9-master

Merge pull request #4 from walmartlabs-wmusiphone/e2e/updateToLatestR…

Version 6.17.0

This release optimizes SDK startup time by deferring or avoiding expensive operations that otherwise were taking place during SDK start.

In addition, it introduces an option to start kits asynchronously.

Here are a few important notes about this release:

• If you are using the Adjust kit, you must update to version 6.17.0 of the kit in coordination with this update to the core SDK. Otherwise your Adjust environment will not be set properly.
• The SDK no longer automatically disables logging in production. The default log level is now set to "none". If you increase the log level for your development builds, please ensure that change does not get compiled into the release version of your app.