title: Apportable -Is -fno-objc-arc supported
body: <p>I have some files in my project which don't support ARC, hence the flag. Compiling for iOS works as intended, compiling with Apportable throws some errors (arc forbids explicit call for release). It seems like the flag is ignored. How can I fix this?</p>
  
  <p>Thanks in advance.</p>