src/cc/rpcenv.cc (4 lines):
	- line 131: py::object env_init_;  // TODO: Make sure GIL is held when destroyed.
	- line 133: // TODO: Add observation and action size functions (pre-load env)
	- line 182: // TODO: Consider set_allocated_data.
	- line 183: // TODO: consider [ctype = STRING_VIEW] in proto file.


src/cc/actorpool.cc (2 lines):
	- line 522: // TODO: Consider set_allocated_data.
	- line 523: // TODO: Consider [ctype = STRING_VIEW] in proto file.