* Added convenience method for fetching Expires header.
* Found but when parsing a SipURI. The port was not properly handled.
* Added clone method to SipURI
* Added convenience method setting integer based parameters.
* Added Contact.builder.with(SipURI) since it is annoying to first build up an Address object.
* Fixed SipParser.consumeGenericParameter. It wasnt parsing quoted strings.
Fix for parsing of headers with empty values

* Also added a toString to SipPacket.
* Fix for parsing header with empty values

The following wouldnt parse correctly:

X-Whatever: \r\n
Call-ID: asdfasdf

The value of X-Whatever became "Call-ID: asdfasdf" which obviously isnt correct. Im not 100% convinced this is even legal but doesnt matter since this is happening in the wild so have to deal with it.
Merge pull request #17 from aboutsip/release-1.0.2

Release 1.0.2