TODO

The parts that need to be implemented, to be sorted by release and importance of feature

* Proper handling of all possible types, including pointers and references
* Removing nodes from the tree (#remove)
* Proper handling of inheritance searching

* Template handling

Following GCCXML types

* ReferenceType
* CvQualifiedType
* Field
* Destructor
* Variable
* OperatorFunction

Done:

* Searching functions by return type
* Searching functions by argument type(s)
  * :args => [nil, "int", nil] # => 3 arguments, 2nd is an int the other two can be anything
* Name searching of namespaces / classes / functions by regex

* Constructor
* FundamentalType
*? File
* Function::Argument
* Struct
* PointerType
* Typedef