ext/sip_parser/sip_parser.rl renamed to ext/sip_parser/sip_message_parser.rl
- Allow entirely replacing the RURI of a request by passing an OverSIP::SIP::Uri instance or a string to `request.ruri=(ruri)`. In case of passing a string it's parsed.
- Allow passing a URI as string to `UacRequest.initialize` and route based on it (if no `dst_host` param is given to the `Uac` instance routing such a request).
- New class methods `OverSIP::SIP::Uri.parse(string)` and `OverSIP::SIP::NameAddr.parse(string)` which generates instances of those classes.