HTML parsing for "new" Google Spreadsheets, version bump to 0.4.

git-svn-id: https://plugins.svn.wordpress.org/inline-google-spreadsheet-viewer/trunk@863656 b8457f37-d9ea-0310-8a92-e5e31aec5664
Correctly pass `$gid` attribute, version bump to 0.4.1.

git-svn-id: https://plugins.svn.wordpress.org/inline-google-spreadsheet-viewer/trunk@863667 b8457f37-d9ea-0310-8a92-e5e31aec5664