* refactor: use semantic type tr_torrent_type_t in libtransmission
* refactor: use semantic type tr_torrent_type_t in gtk client
* refactor: use semantic type tr_torrent_type_t in qt client
* (C++) Macros should not be used to define constants
* (C++) Memory should not be managed manually
* (C++) "void*" should not be used in typedefs, member variables, function parameters or return type
* (C++) When the "Rule-of-Zero" is not applicable, the "Rule-of-Five" should be followed
* (C++) "switch" statements should have "default" clauses
* (C++) "explicit" should be used on single-parameter constructors and conversiosn operators
* (C++) Non-const global variables should not be used