Merge branch 'hotfix/0.1.1' into stable
Bump hotfix version
Test `onresponse` hook with different response types

The on response hook must never crash. Test the fix to a bug when
calculating response size.
Fix a bug when calculating response size

We are getting `iodata()` **NOT** `binary()`. This fixes a bad crash.
Merge branch 'hotfix/0.1.2'