ASL version 1.11.5

Little fixes and improvements.

• Avoid several warnings by newer compilers and static analyzers
• Xml parsing will no longer accept invalid chars in tags/attribs (e.g. cannot start with number)
• Removed implicit String conversion to char* (non const)
• TabularDataFile write undefined items empty
• Added Url::params(dic) to create URL query string from a Dic<>
• Fixed Matrix4 constructors from Vec3 or Vec4 that were ignoring the template element type (forcing float)
• Other code simplifications

Next version will remove some deprecated functions and will not bring asl::byte to the global scope by default.