wxCommunicator: 1.0.7 released

wxCommunicator 1.0.7 has been released on 21.5.2016.

• line registration errors are now shown in status bar (avoid many popups in case of random errors)
• use stun.l.google.com as default STUN server, old STUN server no longer worked
• use longer default REGISTER/SUBSCRIBE expiration time (120s), since previous default value could prevent REGISTER from working
• proxy hostname now also works, previously one had to use IP due to bug in sipXtackLib (2xx ACKs failed to get sent)
• compiled against wxWidgets 2.8.12