Add some meta-programming capabilities to the code-completion and navigation-system. It is now able to successfully find template-class-specializations. Right now it understands specialization by type and pointer-depth.

Yet missing:
specialization by numeric constants, enums and constant expressions(will need some constant numeric expression-parsing), and specialization by const and reference(those are easy). Most generic trait-classes from STL work now, so for example STL-iterators work perfectly.