1.25 2014-07-25 The available() function will longer terminate any current transmission, and force receive mode.  Now, if there is no unprocessed incoming message abd an outgoing message is currently being transmitted,  available() will return false.
RHRouter::sendtoWait(uint8_t*, uint8_t, uint8_t, uint8_t) renamed to sendtoFromSourceWait due to conflicts with new sendtoWait() with optional flags.
RHMEsh and RHRouter already supported end-to-end application layer flags, but RHMesh::sendtoWait()  and RHRouter::sendToWait have now been extended to expose a way to send optional application layer flags.