Merge pull request OneSignal#1182 from OneSignal/rel/4.0.5

4.0.5 Release

4.0.4 Release Commit

Update native SDK versions:
- iOS: 3.2.1
- Android: 4.2.0

4.0.4 Release Commit

Update native SDK versions:
- iOS: 3.2.1
- Android: 4.2.0

4.0.3 Release Commit

Includes patch for `setExternalUserId` iOS null callback crash

4.0.2 Release Commit

4.0.1 Release

Patch for outcome event null check bug in Java bridge.

Merge pull request OneSignal#1044 from OneSignal/major-release

Major release version 4.0.0

Remove TO DO comment

3.9.3 Release Commit

Update Package.json files