* made header and excluded filepaths of filemanager canonical
* implemented solving Attributed- and InjectedClassNameType
* handled clang returning null objects in NameResolvers
* recording of usages of FunctionProtoTypes (e.g. "int(void)" can be used as a template argument)
* implemented solving names of dependent template specialization types (these are not as bad as it sounds ;) )
* implemented correct solving or decayed types
* fixed: qualified type usages are recorded in the correct context
* changed cxx indexer tests not to crash anymore when something is not found
* fixed potential crash when solving decls in lambda captures
* fixed solving type of anonymous structs/classes in c code
* added null checks in name resolvers
* added classes that represent different name kinds
* rewrote NameResolvers to return the new name classes instead of NameElement and NameHierarchy
* removed DataType classes since their functionality moved to the CxxTypeName class.
* moved source code for solving names of NestedNameSpecifiers to new CxxSpecifierNameResolver.
* implemented recording of UsingDirectives.
* implemented using file as context for using directives and using directive decls if no other context is available.
* re-implemented recording of the auto keyword
* revised check for visiting a referenced type or decl
* calling client->onFileParsed everytime a file gets processed by the Preprocessor so we can create valid locations in that file
* created test for detecting a usage of a member inside a CallExpression context
* added method to consume a context based reference kind in the AstVisitor