Merge pull request #46 from avsm/master

Add new functions to Uri_services to expose the list of known services
Add RFC6874 compliance for IPv6 litteral with zones, fix #47
Added a test case for IPv6 litteral with zone id
Add Mike Samuel's recent testcase

From <http://lists.w3.org/Archives/Public/uri/2014Jun/0000.html>
Merge pull request #48 from vbmithr/master

Add RFC6874 compliance for IPv6 litteral with zones, fix #47
Merge pull request #49 from dsheets/master

Add Mike Samuel's recent testcase
bump to 0.7.1