Adds support for sound null safety
Fixes bug where Android Exception wasn't propagated to Dart
Recommends using plugin sim_data instead of sim_service
Adds support for subscription ID with a value of 0
Fixes Exception thrown when accessing deprecated package
Adds optional timeout parameter and permission checks on Android side
Adds guidance in README about interactive / multi steps USSD sessions
Upgrades to Android embedding V2 after release of Flutter 1.12 stable
Adds CHANGELOG entry
Removes pubspec.lock
Improves documentation and example project
Fixes AndroidManifest.xml unnecessary declaration.
First working version of the plugin.