Add detail INTERNAL_ERROR types (#86)
Now in LineApiError, a new errorCode is added to indicate detail root cause.
update minSdkVersion from 17 to 19; update targetSdkVersion from 29 to 30 (#86)
Support Android 11's new Package Visibility configuration (#91)
- add more logs for debugging why token is not available
- fix sometimes it's not possible to find Activity for handling login intent. If it happens, it will use browser login instead of returning ActivityNotFoundException.