- simplified user interface by using same layout row for incoming and

outgoing calls
- dtmf digits can now be send also during incoming calls
- removed unused function uag_current()
- removed soft keyboard when call button is clicked and when call is closed
- increased version numbers

app/build.gradle

@@ -8,8 +8,8 @@ android {
         applicationId = 'com.tutpro.baresip'
         minSdkVersion 21
         targetSdkVersion 26
-        versionCode = 18
-        versionName = '2.3.2'
+        versionCode = 19
+        versionName = '2.4.0'
         externalNativeBuild {
             cmake {
                 cFlags '-DHAVE_INTTYPES_H'