- Migraded project to AndroidX.

app/src/main/kotlin/com/tutpro/baresip/AboutActivity.kt

@@ -3,8 +3,8 @@ package com.tutpro.baresip
 import android.app.Activity
 import android.content.Intent
 import android.os.Bundle
-import android.support.v4.text.HtmlCompat
-import android.support.v7.app.AppCompatActivity
+import androidx.core.text.HtmlCompat
+import androidx.appcompat.app.AppCompatActivity
 import android.text.method.LinkMovementMethod
 import android.view.MenuItem
 import android.widget.TextView