* [AP,EXT] Added leave_trail/1 option.
* [AP,AP_STAGE,FIX] Module annotation on the level of AP stages allowing different AP stages within one AP to have different modules.
* [CKAN_AP,SC] Use the updated code for file downloading and AP stages.
* [URI_EXT,NEW] Rewrote download_to_directory/3, now using the IRI structure for creating the folders.
* [URI_EXT,NEW] Added url_to_directory_name/2.
* [XSD_FLOAT,FIX] Unfixed bug in DCG for floating point values. Too difficult to resolve right now; hack fixing this for now...