Removal of some debug code from the first V4 BETA. Apologies if anyone saw this. Code tidy(ier) than before. Permissions are now fairly generic - 'view content'.
Added new URL forms, explicitly stating type 'nodes' or 'terms' for paging. Loaders now check all parts of path are valid. New feature on two URL forms allows multiple tid references, as with ?q=taxonomy/term.