Add a Uri() function that exposes the document's base uri for relative path resolution
Merge pull request #70 from jbowtie/doc-base-uri

Add a Uri() function that exposes the document's base uri
Issue 55 changes to make xml package work on OS X 10.9
Merge pull request #71 from fmccann/issue_55

Issue 55 changes to make xml package work on OS X 10.9
Merge branch 'master' into mw_master