o Find a better way to handle magic_load than just defaulting to NULL
o Find a way to make magic_check work on NULL
o [DONE] Find a way to make magic_setflags work
o Refactor code into initialize instead of new
o [DONE?] Enable blocks for automatic cleanup:

FileMagic.open("somefile.txt") do |file|
  # close is called at the end of this block
end