Update dependencies, support Android 11, support Intent.CATEGORY_APP_BROWSER, update checkstyle

[hnljp]

A little summary.

Update dependencies

• the AndoridX dependencies need to get updated
• okio (still the Java version)
• joda

Update plugins

• Android Gradle
• bintray
• jacoco
• checkstyle

Support Android 11 (discussed in #554 )
Support Intent.CATEGORY_APP_BROWSER

The library should still get checked on the oldest supported version.

[hnljp]

Thank you