src/annoylib.h (4 lines):
	- line 130: *error = (char *)malloc(256);  // TODO: win doesn't support snprintf
	- line 1067: // TODO: this probably creates an index in a corrupt state... not sure what to do
	- line 1229: // TODO: handle OOB
	- line 1251: // TODO: handle OOB


src/mman.h (1 line):
	- line 46: //TODO: implement