API changes between v0.3 and v0.4

• Use '0.4' in the XML and URLs
• Use 'create' instead of '0' to create objects, eg /api/0.4/node/create
• API speaks mime type 'application/xml'
• Get map command will return besides the nodes and segments of the ways within the given bounding box all their nodes and segments lie outside the given bounding box.