* refactor: tr_torrentGetMetadataPiece() returns an optional vector
* refactor: use tr_pathbuf in create_temp_path()
* refactor: use tr_pathbuf in win32 create_temp_path()
* refactor: use std::vector in isPeerInteresting()
* refactor: remove tr_new0 from tr_peerMgrPeerStats()
* refactor: remove tr_new0 from rechokeUploads()
* refactor: silence clang nullptr dereference warning
* refactor: make tr_natpmp a C++ class
* refactor: use std::string in tr_log_message
* fix: add default case to switch statement
* fix: remove redundant static specifier
* fix: use std::optional.value_or
* fix: make type of variable pointer-to-const
* refactor: move log state into a struct
* refactor: make tr_peerMgr constructor explicit
* fix: make type of variable pointer-to-const
* fix: replace insert with try_emplace
* fix: implicit conversion may lose precision
* fix: use init-statement to reduce variable scope
* chore: mark unused return value with (void)
* refactor: include <memory> when using shared_ptr or unique_ptr
* refactor: include <cstdio> iff we use it
* refactor: include <cstring> iff we use it
* refactor: include <cstdlib> iff we use it
* refactor: include <string_view> or <string> iff we use it
* refactor: include <array> iff we use it
* refactor: include <ctime> iff we use it
* refactor: include <cctype> iff we use it
* refactor: misc #include cleanups in libtransmission
* (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
